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Residence-hall kitchenette smoke detector set on fire

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NYarsontimely warninghigh confidence

Cornell Police issued a Crime Alert after a smoke detector in a Clara Dickson Hall kitchenette was set on fire at about 1:57 a.m. on April 12, 2025, then posted that the individual responsible had been identified.

Alerts
2
Response
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Killed
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Injured
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Institution
Cornell University
Private R1 · NY
All Cornell cases →
~26,000 studentsCornellALERT / Crime Alerts
Official alert policy
Read when and how Cornell says it will use CornellALERT: summarized, quoted, and analyzed.
Documented Timeline

Alert Sequence

2 messages in sequence · 2 verified verbatim

Confirmed wording is transcribed character-for-character from a primary source. Use Verify this quote under each message to open that source in a new tab and compare the text yourself.

INITIAL ALERTEmail
Verified verbatim1048 chars
On April 12, 2025, at 1:57 a.m., the Cornell University Police Department was notified of an arson at Clara Dickson Hall, 21 Sisson Place, City of Ithaca. A smoke detector in room 4534 kitchenette area appeared to have been intentionally set on fire around 1:57 a.m. on April 12, 2025. There is no suspect description available at this time. The investigation is ongoing and is being handled by the Cornell University Police Department and the Cornell University Fire Marshal’s Office. Anyone with information related to this crime is asked to contact the Cornell University Public Safety Communications Center at (607) 255-1111. The Cornell University Police Department and Cornell University Fire Marshal’s Office urge the community to protect themselves in the event of a fire by alerting those around you, evacuating the building, closing room doors as you leave, activating the fire alarm, and moving away from the building once you exit. Immediately report any suspected criminal activity by dialing 911 or utilizing the RAVE Guardian app.
Dual independent WP REST fetch 2026-08-24. Body sha256 6277cad23d73c3d7c5ee135bbc41510bd869c54070f72311df82d7fe3f6c760f.
Curly apostrophe in Fire Marshal's preserved.
Distinct incident from 2025-03-14-cornell-university-schuyler-house-arson: different building and date (Clara Dickson April 12 vs Schuyler House March 14).
UPDATEEmail+9h 39m
Verified verbatim713 chars
Update – Crime Alert-Arson Clara Dickson Hall Cornell Police have identified the individual responsible for this morning’s arson incident. Anyone with additional information related to this crime is asked to contact the Cornell University Public Safety Communications Center at (607) 255-1111. The Cornell University Police Department and Cornell University Fire Marshal’s Office urge the community to protect themselves in the event of a fire by alerting those around you, evacuating the building, closing room doors as you leave, activating the fire alarm, and moving away from the building once you exit. Immediately report any suspected criminal activity by dialing 911 or utilizing the RAVE Guardian app.
Dual independent WP REST fetch 2026-08-24. Body sha256 2f2b6ec510b357487f0be5c01eb32c50bf30a307387197b3569c14295d4f1a78.
En-dash in Update heading and curly apostrophes preserved. Leading space before Anyone preserved.
crimealert-3 (15:29) is an identical body; not filed as a third sequence.
Message elements

How the first alert is built

To check this alert, SuperGrok Heavy 4.5 (an AI) read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.

On April 12, 2025, at 1:57 a.m., the Cornell University Police Department was notified of an arson at Clara Dickson Hall, 21 Sisson Place, City of Ithaca. A smoke detector in room 4534 kitchenette area appeared to have been intentionally set on fire around 1:57 a.m. on April 12, 2025. There is no suspect description available at this time. The investigation is ongoing and is being handled by the Cornell University Police Department and the Cornell University Fire Marshal’s Office. Anyone with information related to this crime is asked to contact the Cornell University Public Safety Communications Center at (607) 255-1111. The Cornell University Police Department and Cornell University Fire Marshal’s Office urge the community to protect themselves in the event of a fire by alerting those around you, evacuating the building, closing room doors as you leave, activating the fire alarm, and moving away from the building once you exit. Immediately report any suspected criminal activity by dialing 911 or utilizing the RAVE Guardian app.

  • Sourcepresent25/25

    Final assessment

    All 25 reads agree source is present. Cornell University Police Department is named as the notified and investigating agency, with the Fire Marshal's Office also identified.

    Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.

    See all 25 individual reads
    1. present: Cornell University Police Department is named as the agency notified and as the office conducting the investigation.
    2. present: Named campus authorities, Cornell University Police and the Fire Marshal's Office, identify who is handling and urging the community.
    3. present: Cornell University Police Department appears as the notified and investigating authority, which identifies the source.
    4. present: The issuing side is clear because Cornell University Police Department and the Fire Marshal's Office urge the community at the end.
    5. present: Source is present through repeated naming of Cornell University Police Department as the handling agency.
    6. present: Cornell University Police and Public Safety Communications Center are named agencies, so the sender side is identified.
    7. present: Who is speaking is the Cornell University Police Department, named as notified, investigating, and urging action.
    8. present: The Fire Marshal's Office and Cornell Police are both named as the offices handling the case.
    9. present: The university police department is named as the authority that was notified of the arson.
    10. present: Cornell University Police Department identifies the responding authority in the first sentence.
    11. present: Multiple named Cornell safety offices, police, fire marshal, and public safety communications, mark the source.
    12. present: The university names its police department as the agency that received the report.
    13. present: Cornell University Police Department is the named investigating agency, which satisfies source.
    14. present: Source is the Cornell University Police Department, later joined by the Fire Marshal's Office as a named authority.
    15. present: The closing urge is issued by Cornell University Police and the Fire Marshal's Office, naming who is speaking.
    16. present: Cornell University Police Department is identified as both the notified unit and a lead investigator.
    17. present: A campus police department is named, which is enough to identify the sending authority.
    18. present: Cornell University Fire Marshal's Office is named alongside police as a handling authority.
    19. present: The Public Safety Communications Center is a named Cornell unit to contact, and police are named as well.
    20. present: Cornell University Police Department is named at the start as the agency that was notified.
    21. present: Who sent or is responsible is Cornell University Police, named repeatedly as investigator and community urger.
    22. present: Named agencies Cornell University Police and the Fire Marshal's Office identify the source of the warning.
    23. present: The first sentence names Cornell University Police Department as the notified authority.
    24. present: Cornell University Police Department and Cornell University Fire Marshal's Office are the named issuing and handling bodies.
    25. present: The university police department is named as the agency notified of the arson and still investigating it.
  • Hazardpresent25/25

    Final assessment

    Unanimous agreement the hazard is specific. The text names an arson and a smoke detector intentionally set on fire, not a generic incident.

    What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.

    See all 25 individual reads
    1. present: The threat is named specifically as arson, with a smoke detector intentionally set on fire.
    2. present: 'Arson' and 'set on fire' name a specific fire crime rather than a vague incident.
    3. present: The message names arson at a residence hall and describes a detector intentionally set on fire.
    4. present: The hazard is a specific arson involving a kitchenette smoke detector set on fire.
    5. present: A specific threat, arson, is stated in the first sentence.
    6. present: The crime is identified as arson rather than a generic emergency.
    7. present: Intentionally setting a smoke detector on fire names a concrete fire hazard.
    8. present: Hazard is present: arson, restated as a kitchenette smoke detector set on fire.
    9. present: The opening calls the event an arson, a specific threat type.
    10. present: Setting a smoke detector on fire is a specific fire threat, not a vague situation.
    11. present: The word arson specifies the hazard as an intentional fire crime.
    12. present: 'Intentionally set on fire' names the mechanism of the arson hazard.
    13. present: The alert states the threat is arson at a hall, which is specific.
    14. present: A kitchenette smoke detector set on fire is a specific fire hazard.
    15. present: Arson is named up front as the crime police were notified about.
    16. present: The specific threat is arson, an intentional fire, at the hall.
    17. present: Hazard is not generic; the text says arson and fire, not merely an incident.
    18. present: Police were notified of an arson, a specific named threat.
    19. present: Setting a smoke detector on fire around 1:57 a.m. specifies the fire hazard.
    20. present: The crime type arson is stated, which is a specific hazard.
    21. present: A smoke detector 'intentionally set on fire' names the hazard with specificity.
    22. present: Arson at a residence hall is a specific threat, not a vague emergency.
    23. present: The hazard is arson, later detailed as a detector set on fire in a kitchenette.
    24. present: Calling the event arson and describing an intentional fire meets the hazard test.
    25. present: A specific fire crime is named: arson involving a smoke detector set on fire.
  • Locationpresent25/25

    Final assessment

    All 25 reads find location present. Clara Dickson Hall, 21 Sisson Place in Ithaca, and room 4534 kitchenette give a precise place.

    Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.

    See all 25 individual reads
    1. present: The scene is Clara Dickson Hall at 21 Sisson Place in the City of Ithaca, plus room 4534.
    2. present: A building name, street address, city, and kitchenette room number all locate the event.
    3. present: It says where: Clara Dickson Hall, 21 Sisson Place, Ithaca, room 4534 kitchenette area.
    4. present: Clara Dickson Hall and its Sisson Place address supply a precise campus location.
    5. present: The text pins the event to a named hall, a street address, and a room kitchenette.
    6. present: Location includes Clara Dickson Hall and 21 Sisson Place in Ithaca.
    7. present: Room 4534 in Clara Dickson Hall at 21 Sisson Place is a specific place.
    8. present: City of Ithaca, Sisson Place, and Clara Dickson Hall together give a full location.
    9. present: The address 21 Sisson Place and the hall name locate the incident on campus in Ithaca.
    10. present: The kitchenette in room 4534 of Clara Dickson Hall is a highly specific site.
    11. present: Where is answered with a building, a street number, a city, and a room.
    12. present: Clara Dickson Hall is a named campus building, sufficient for location.
    13. present: 21 Sisson Place, City of Ithaca, gives a street-level location with the hall name.
    14. present: Location is present via Clara Dickson Hall and its Ithaca street address.
    15. present: Room 4534 kitchenette area inside Clara Dickson Hall is a precise indoor location.
    16. present: The event is placed at Clara Dickson Hall, 21 Sisson Place, in Ithaca.
    17. present: Building name plus street address plus city fully answer where.
    18. present: Sisson Place and Clara Dickson Hall locate the arson on campus in Ithaca.
    19. present: The hall, the street, the city, and the kitchenette room are all location details.
    20. present: Clara Dickson Hall at 21 Sisson Place is a named place, so location is present.
    21. present: City of Ithaca and Clara Dickson Hall together identify where it occurred.
    22. present: The kitchenette of room 4534 in Clara Dickson Hall is the stated site.
    23. present: 21 Sisson Place, City of Ithaca, is a full street location with the hall name.
    24. present: Location is given as Clara Dickson Hall, 21 Sisson Place, Ithaca, room 4534.
    25. present: The alert says the arson was at Clara Dickson Hall on Sisson Place in Ithaca.
  • Guidancepresent22/25

    Final assessment

    Strong majority finds guidance in instructions to evacuate, close doors, pull the alarm, move away, and dial 911. A few reads treat that list as generic fire advice, not incident guidance.

    The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.

    See all 25 individual reads
    1. present: Readers are instructed to alert others, evacuate, close room doors, activate the alarm, and move away after exiting.
    2. present: The fire safety paragraph tells people what to do: evacuate the building and activate the fire alarm.
    3. present: Protective steps are listed for a fire, including alerting those nearby and moving away once you exit.
    4. present: Immediate reporting by dialing 911 or using the RAVE Guardian app is an instructed action.
    5. present: Community members are told to protect themselves by evacuating, closing doors, and activating the alarm.
    6. absent: The fire steps are only general advice for a future fire, and asking for tips is not protective guidance for this already reported arson.
    7. present: Evacuating the building and moving away from it after exit are protective instructions to recipients.
    8. present: Recipients are told to close room doors as they leave and to activate the fire alarm.
    9. present: The message instructs people to alert those around them and to evacuate if there is a fire.
    10. present: Dial 911 is listed as the way to report suspected crime, which counts as guidance.
    11. present: Protective action is spelled out: evacuate, close doors, pull the alarm, and get away from the building.
    12. present: The community is urged to protect themselves with a list of fire evacuation actions.
    13. absent: Contacting the tip line is not guidance, and the fire steps are hypothetical for some later fire rather than an order now.
    14. present: Moving away from the building once you exit is an explicit stay-clear instruction.
    15. present: Activating the fire alarm and evacuating are protective actions directed at the community.
    16. present: Recipients are told to alert people around them and to evacuate the building in a fire.
    17. present: Closing doors as you leave is one of several listed protective actions.
    18. present: The list of fire actions, evacuate, close doors, alarm, move away, is guidance to recipients.
    19. present: Dialing 911 to report suspected criminal activity is an instruction to the audience.
    20. absent: No current protective order is given for this completed kitchenette fire; the later list is only generic fire education.
    21. present: The Fire Marshal's Office and police tell people to evacuate and move away from the building.
    22. present: Protective fire actions are listed as instructions: alert others, evacuate, close doors, activate the alarm, move away.
    23. present: Using the RAVE Guardian app or 911 to report crime is presented as what people should do.
    24. present: Evacuate the building and activate the fire alarm are classic protective instructions.
    25. present: Recipients are urged to protect themselves by a sequence of fire evacuation steps, which is guidance.
  • Timepresent25/25

    Final assessment

    All 25 reads agree timing is present. The alert states April 12, 2025, at 1:57 a.m., and also calls the investigation ongoing.

    When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.

    See all 25 individual reads
    1. present: A full date and clock time appear: April 12, 2025, at 1:57 a.m.
    2. present: The opening sentence timestamps the notice at 1:57 a.m. on April 12, 2025.
    3. present: Recency is given with the date, the 1:57 a.m. clock time, and the word ongoing.
    4. present: Clock time 1:57 a.m. is given twice, both tied to April 12, 2025.
    5. present: The phrase 'On April 12, 2025, at 1:57 a.m.' is a clear time marker.
    6. present: Date, 1:57 a.m., at this time, and ongoing all convey when.
    7. present: The investigation is called ongoing, and the event time is given as 1:57 a.m. on April 12, 2025.
    8. present: 'Around 1:57 a.m. on April 12, 2025' supplies both clock time and date.
    9. present: Timing is present from the date-time stamp and from immediately in the reporting line.
    10. present: April 12, 2025, and 1:57 a.m. are explicit temporal details.
    11. present: The notice time and the fire time are both given as about 1:57 a.m. on April 12.
    12. present: A clock time of 1:57 a.m. and the date April 12, 2025, are both present.
    13. present: 'At this time' and ongoing add recency to the stated 1:57 a.m. date-time.
    14. present: The first clause timestamps police notification at 1:57 a.m. on April 12, 2025.
    15. present: Time is present: date, 1:57 a.m., and the investigation described as ongoing.
    16. present: Two mentions of 1:57 a.m. on April 12, 2025, make the timing unmistakable.
    17. present: Immediately in the reporting sentence is a recency cue on top of the clock time.
    18. present: April 12, 2025, appears with a 1:57 a.m. hour, so when is answered.
    19. present: The date-time opening and the later 'around 1:57 a.m.' both mark when it happened.
    20. present: Clock time, calendar date, and ongoing investigation language all supply time.
    21. present: 'On April 12, 2025, at 1:57 a.m.' is a complete timestamp.
    22. present: Time is present through the 1:57 a.m. figure, the April 12 date, and immediately.
    23. present: The fire is timed at about 1:57 a.m. on April 12, 2025.
    24. present: Date, clock time, at this time, and ongoing all function as time cues.
    25. present: Notification at 1:57 a.m. on April 12, 2025, answers when.
  • Impactabsent4/25

    Final assessment

    Most reads find no stated consequence or severity beyond naming the arson. A minority treats protect themselves or the burned detector as implied harm, which the majority rejects.

    What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.

    See all 25 individual reads
    1. absent: No wording describes injury, danger, or other consequences beyond the fact of the fire.
    2. absent: Severity is not stated; there is no phrase such as dangerous, life threatening, or may cause injury.
    3. absent: Naming a burned smoke detector states the crime, not a broader harm or seriousness to occupants.
    4. absent: The alert never explains what the fire could do to people or property beyond naming it.
    5. present: Urging people to protect themselves, plus a detector intentionally set on fire, implies the fire can harm occupants and property.
    6. absent: There is no statement of consequences such as injury risk or that the fire was dangerous.
    7. absent: Impact is absent because the text does not say the arson was deadly, damaging, or life threatening.
    8. absent: A named fire is not enough for impact when no severity or outcome for people is stated.
    9. absent: No consequence language appears, only the hazard name and a request for information.
    10. present: An object intentionally set on fire in a residence hall kitchenette strongly implies property damage and risk to residents.
    11. absent: Nothing says the fire could injure, kill, or destroy beyond the named act itself.
    12. absent: Absent any dangerous or deadly wording, impact is not conveyed.
    13. absent: The message does not describe what harm the fire might cause to students or the building.
    14. absent: Impact fails because consequences such as injury or serious damage are never stated.
    15. absent: There is no severity cue, only a factual report that a detector appeared to be set on fire.
    16. present: Telling the community to protect themselves in a fire implies the hazard can hurt people if they do not act.
    17. absent: The burned detector is the hazard description, not a statement of wider impact.
    18. absent: No phrase conveys seriousness such as destructive, dangerous, or for your safety.
    19. absent: Impact is missing; readers are not told the fire was harmful, deadly, or damaging in a stated way.
    20. absent: Nothing describes potential injury or other outcomes of the arson.
    21. absent: Absent words about danger or harm, the impact element is not satisfied.
    22. present: Intentionally burning a detector in an occupied hall kitchenette conveys property harm and a serious fire risk to residents.
    23. absent: The text reports a crime and asks for tips without stating any consequence of the fire.
    24. absent: No impact claim is made; seriousness is not described beyond the named arson.
    25. absent: There is no language of injury, fatality, or dangerous conditions, so impact is absent.

Coded by SuperGrok Heavy 4.5

Systematic AI judgments with visible reasoning, not human-validated codings.

About this analysis
Context

Background

Cornell publishes full Crime Alert narratives at publicsafety.cornell.edu/crime-alerts. Clara Dickson Hall is at 21 Sisson Place.
Analysis

Key Findings

Initial product names a smoke detector set on fire in room 4534 kitchenette.
Same-day update reports the individual responsible was identified; fire-safety guidance is repeated.
Outcome
Cornell Police identified the individual responsible the same afternoon. Duplicate update pages crimealert-2 and crimealert-3 carry identical body text.
Provenance

Sources

Every claim on this page is meant to be checkable. Open the links below (and the Verify this quote control under each confirmed alert) to read the original university, news, or archive page yourself. Hostnames are shown so you can see where you are going; archived copies survive when live pages move or disappear. See also our methodology.

  1. Official
  2. Official
  3. Official
Cite this case

Campus Alert Archive. "Cornell University: Residence-hall kitchenette smoke detector set on fire." Incident of April 12, 2025. Added August 2026. https://campusalertarchive.com/case/cornell-university-clara-dickson-hall-arson-2025-04-12/

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Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.

Tags
private-r1new-yorkcornellarsontimely-warning
Added August 2026Updated August 2026Via ingestion