Campus Alert Archive
Yale

Phoned report of a gunman prompts six-hour shelter-in-place; determined to be a hoax

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Confirmed HoaxDetermined to be a hoax. The institutional response is documented because it reveals how the alert system performed under a perceived real threat.

On Monday morning, November 25, 2013 (the same day Connecticut released the official report on the Sandy Hook Elementary School shooting) an anonymous male called 911 from a pay phone on Columbus Avenue in New Haven and claimed that his roommate was on his way to Yale University with a gun. Yale issued a shelter-in-place alert at 10:17 AM EST (29 minutes after the 911 call) and locked down its Old Campus for the next six hours while SWAT teams from Yale Police, New Haven Police, the Connecticut State Police, the FBI, and the ATF conducted a room-by-room search of the historic quad. No gunman was found.

Alerts
4
Response
29 min
Killed
0
Injured
0
Institution
Yale University
Private R1 · CT
All Yale cases →
~13,400 studentsYale Alert
Official alert policy
Read when and how Yale says it will use Yale ALERT: summarized, quoted, and analyzed.
Documented Timeline

Alert Sequence

4 messages in sequence · 3 verified verbatim

Some messages in this sequence are documented (their existence, timing, and channel are sourced) but their exact wording is not preserved in the public record. Those entries appear as placeholders; only confirmed text is displayed.

INITIAL ALERTSMS
Verified verbatimFox News coverage citing the verbatim 10:17 AM EST Yale Alert sent on November 25, 201395 chars
Confirmed report of person with a gun on/near Old Campus. SHELTER IN PLACE. This is NOT a test.
Sent 29 minutes after the 9:48 AM EST 911 call from the Columbus Avenue pay phone, a notably fast turnaround for a New Haven-Yale-FBI-coordinated alert
The word 'Confirmed' reflected that police had received the call and were treating it as credible, though no gunman had actually been seen by anyone on campus
'This is NOT a test' appears to be a Yale-specific phrasing designed to override the muscle memory of regular Yale Alert tests, which had become routine by 2013
'Old Campus' refers to the original 18th-century quad housing first-year undergraduates, the 'hot zone' for the multi-agency search
UPDATEEmail
Verified verbatimCNN coverage quoting the more detailed Yale Alert email follow-up message488 chars
New Haven Police have received an anonymous call from a phone booth in the 300 block of Columbus Avenue (between Howard Avenue and Hallock Street) reporting a person on the Yale Campus with a gun. There have been NOT confirmations or sightings of this person. Yale and New Haven police are in the area. If you have information, please call 911 immediately. Yale Police advises those on campus to remain in their current location and shelter in place until there is additional information.
The typo 'There have been NOT confirmations' is preserved verbatim, likely a rushed substitution of 'NOT' for 'no' under pressure
Names the precise location of the pay phone (300 block of Columbus Avenue between Howard and Hallock), unusual specificity for a campus alert and indicates how much information had been triaged in the first 90 minutes
Walks back the 'Confirmed' framing of the first SMS by stating explicitly: 'no confirmations or sightings of this person'
UPDATESMS
Verified verbatimNBC News, quoting the verbatim Yale Alert sent at 1:45 PM EST on November 25, 2013; corroborated by Yale Daily News coverage212 chars
When (police) knock on your door, a Yale Police Officer will slip their Yale ID under the door. Please cooperate. In some cases, Police may use keys, but they will identify themselves. Shelter in Place continues.
Recovered verbatim from NBC News, which quoted the 1:45 PM EST Yale Alert word-for-word; the Yale Daily News independently described the same message (police identifying themselves by slipping a Yale ID under the door), confirming the wording
The '(police)' parenthetical is reproduced exactly as NBC News rendered it; the message instructed sheltering students how to verify that officers entering their rooms were legitimate Yale Police during the room-by-room SWAT search
By 1:45 PM EST, SWAT teams had been conducting room-by-room searches of Old Campus and the residential colleges for several hours with no signs of a gunman, a sustained posture rare in U.S. campus emergencies
Message elements

How the first alert is built

To check this alert, Claude (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.

Confirmed report of person with a gun on/near Old Campus. SHELTER IN PLACE. This is NOT a test.

  • Sourceabsent0/25

    Final assessment

    All 25 reads agree no sender tag, branded signature, or named authority appears in the text, so the source is absent.

    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. absent: No sender tag or named authority appears in the text.
    2. absent: No branded signature, sender, or named authority appears in the text.
    3. absent: No sender tag, branded signature, or named authority appears in the text.
    4. absent: No sender, branded signature, or responding authority is identified.
    5. absent: No sender, branded signature, or issuing authority is identified in the text.
    6. absent: No sender, branded signature, or agency is identified in the text.
    7. absent: No sender tag, university name, or named authority appears in the text.
    8. absent: No sender tag, university name, or named authority appears in the text.
    9. absent: No sender, branded signature, or named authority appears in the text.
    10. absent: No sender, branded signature, or responding authority is named in the text.
    11. absent: No sender, branded signature, or named authority appears in the text.
    12. absent: No sender, agency, or branded signature appears in the text.
    13. absent: No sender tag, signature, or issuing authority is named in the text.
    14. absent: No sender tag, university name, or agency identifies who sent it.
    15. absent: No sender, signature, or named authority appears in this message.
    16. absent: No sender, authority, or branded signature is identified in the text.
    17. absent: No sender, branded tag, or named agency appears in the text.
    18. absent: No sender tag, university name, or named agency is identified in the text.
    19. absent: No sender, branded tag, or authority is named in the text.
    20. absent: No sender, agency, or branded signature is identified in the text.
    21. absent: No sender, branded signature, or named authority identifies who issued this message.
    22. absent: No sender, branded signature, or named authority is identified in the text.
    23. absent: No sender, branded signature, or named authority appears in the text.
    24. absent: No sender tag or issuing authority is identified in the text.
    25. absent: No sender tag, agency, or institution names itself in the text.
  • Hazardpresent25/25

    Final assessment

    Unanimous: the message names a "person with a gun", a specific threat, so the hazard is clearly present.

    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: It names "person with a gun", a specific threat.
    2. present: It names "person with a gun", a specific threat.
    3. present: It names a "person with a gun", a specific threat.
    4. present: It names a specific threat: "person with a gun".
    5. present: It names a "person with a gun", a specific threat.
    6. present: It names "person with a gun", a specific threat.
    7. present: It states "Confirmed report of person with a gun", a specific threat.
    8. present: It names a "person with a gun", a specific threat.
    9. present: It names "person with a gun", a specific threat.
    10. present: It names "person with a gun", a specific threat.
    11. present: It names "Confirmed report of person with a gun", a specific threat.
    12. present: It names "person with a gun", a specific threat.
    13. present: It names a "person with a gun", a specific threat.
    14. present: It names a "person with a gun", a specific threat.
    15. present: "person with a gun" names a specific threat.
    16. present: It names "person with a gun", a specific threat.
    17. present: It names a "person with a gun", a specific threat.
    18. present: It names a "person with a gun", a specific threat.
    19. present: "person with a gun" names a specific threat.
    20. present: It names a "person with a gun", a specific threat.
    21. present: It names "person with a gun", a specific threat.
    22. present: It names a "person with a gun", a specific threat.
    23. present: It names "person with a gun", a specific threat.
    24. present: It names "person with a gun", a specific threat.
    25. present: It reports a "person with a gun", a specific threat.
  • Locationpresent25/25

    Final assessment

    All 25 reads agree it cites "on/near Old Campus", a specific place, so the location is present.

    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: It cites "on/near Old Campus", a specific place.
    2. present: It specifies "on/near Old Campus".
    3. present: It names "on/near Old Campus", a specific place.
    4. present: It specifies "on/near Old Campus".
    5. present: It specifies "on/near Old Campus".
    6. present: It says "on/near Old Campus", a specific place.
    7. present: It names "on/near Old Campus".
    8. present: It specifies "on/near Old Campus".
    9. present: It locates it "on/near Old Campus".
    10. present: It specifies "on/near Old Campus", a named place.
    11. present: It locates it "on/near Old Campus".
    12. present: It names "on/near Old Campus", a specific place.
    13. present: It locates it "on/near Old Campus".
    14. present: It names "on/near Old Campus".
    15. present: "on/near Old Campus" specifies the location.
    16. present: It locates it "on/near Old Campus", a specific place.
    17. present: It names "on/near Old Campus".
    18. present: It names "on/near Old Campus".
    19. present: It names "on/near Old Campus."
    20. present: It specifies "on/near Old Campus", a named place.
    21. present: It cites "on/near Old Campus", a specific place.
    22. present: It cites "on/near Old Campus", a specific location.
    23. present: It cites "on/near Old Campus", a specific place.
    24. present: It names "on/near Old Campus", a specific place.
    25. present: It cites "on/near Old Campus", a specific location.
  • Guidancepresent25/25

    Final assessment

    Unanimous: it instructs "SHELTER IN PLACE", a clear protective action, so guidance is present.

    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: "SHELTER IN PLACE" instructs a protective action.
    2. present: It instructs "SHELTER IN PLACE", a protective action.
    3. present: It instructs "SHELTER IN PLACE", a protective action.
    4. present: It instructs recipients to "SHELTER IN PLACE".
    5. present: It instructs "SHELTER IN PLACE", a protective action.
    6. present: It instructs "SHELTER IN PLACE", a protective action.
    7. present: It instructs "SHELTER IN PLACE".
    8. present: "SHELTER IN PLACE" is a protective instruction.
    9. present: It instructs "SHELTER IN PLACE", a protective action.
    10. present: It instructs "SHELTER IN PLACE", a protective action.
    11. present: It instructs "SHELTER IN PLACE", a protective action.
    12. present: It instructs "SHELTER IN PLACE", a protective action.
    13. present: It instructs recipients to "SHELTER IN PLACE".
    14. present: It instructs "SHELTER IN PLACE".
    15. present: "SHELTER IN PLACE" is a protective instruction.
    16. present: It instructs "SHELTER IN PLACE", a protective action.
    17. present: It instructs "SHELTER IN PLACE".
    18. present: It instructs "SHELTER IN PLACE".
    19. present: "SHELTER IN PLACE" is a protective instruction.
    20. present: It instructs "SHELTER IN PLACE", a protective action.
    21. present: It instructs "SHELTER IN PLACE", a protective action.
    22. present: It instructs recipients to "SHELTER IN PLACE", a protective action.
    23. present: It instructs "SHELTER IN PLACE", a protective action.
    24. present: It instructs "SHELTER IN PLACE", a protective action.
    25. present: "SHELTER IN PLACE" is a protective action instruction.
  • Timeabsent0/25

    Final assessment

    All 25 reads agree no clock time, date, or recency cue appears; "This is NOT a test" is a disclaimer, not timing.

    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. absent: No clock time, date, or recency cue appears.
    2. absent: "This is NOT a test" is a disclaimer, not a clock time, date, or recency cue.
    3. absent: No clock time, date, or recency word appears.
    4. absent: No clock time, date, or recency cue is present.
    5. absent: No clock time, date, or recency cue such as "now" appears.
    6. absent: No clock time, date, or recency cue appears, "NOT a test" is not a time.
    7. absent: No clock time, date, or recency cue appears; "This is NOT a test" is not a time cue.
    8. absent: No clock time, date, or recency cue appears.
    9. absent: No clock time, date, or recency cue appears.
    10. absent: No clock time, date, or recency cue appears; "NOT a test" is not a time cue.
    11. absent: No clock time, date, or recency cue such as "now" appears in the text.
    12. absent: No clock time, date, or recency cue appears; "This is NOT a test" is not a time cue.
    13. absent: No clock time, date, or recency cue appears.
    14. absent: "This is NOT a test" is not a time or recency cue.
    15. absent: No clock time, date, or recency cue appears.
    16. absent: No clock time, date, or recency cue appears; "Confirmed report" is not a time reference.
    17. absent: No clock time, date, or recency cue appears.
    18. absent: No clock time, date, or recency cue appears; "This is NOT a test" is not a time reference.
    19. absent: No clock time, date, or recency cue appears.
    20. absent: No clock time, date, or recency word like "now" appears; "not a test" is not timing.
    21. absent: No clock time, date, or recency word such as "now" appears.
    22. absent: No clock time, date, or recency cue appears in the text.
    23. absent: No clock time, date, or recency cue appears.
    24. absent: No clock time, date, or recency word appears; "This is NOT a test" is not a time cue.
    25. absent: No clock time, date, or recency cue appears in the text.
  • Impactpresent25/25

    Final assessment

    Yes; unanimous that the shelter-in-place alert conveys a threat to safety.

    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. present: Reports a confirmed person with a gun and directs shelter in place stating it is not a test, implying an armed threat.
    2. present: It confirms a person with a gun near Old Campus and directs shelter in place stating it is not a test, where the confirmed armed person conveys a clear danger.
    3. present: A confirmed report of a person with a gun prompting shelter in place conveys an armed danger to people.
    4. present: It reports a confirmed person with a gun and orders shelter in place stating it is not a test, conveying a credible weapon-based threat to safety.
    5. present: It reports a confirmed person with a gun and orders shelter in place, with the armed person conveying a threat of violent harm.
    6. present: It reports a confirmed person with a gun and directs shelter in place, conveying an explicit armed threat and danger.
    7. present: Reports a confirmed person with a gun near campus and orders shelter in place, conveying a clear stated danger.
    8. present: It states a confirmed report of a person with a gun and orders shelter in place, conveying a stated danger to people.
    9. present: Reports a confirmed person with a gun and orders shelter in place, an explicit armed threat to safety.
    10. present: It reports a confirmed person with a gun and orders shelter in place, an armed threat clearly implying danger.
    11. present: A confirmed report of a person with a gun with shelter-in-place and not a test conveys a serious armed danger.
    12. present: Reports a confirmed person with a gun and directs shelter in place, implying an armed deadly threat.
    13. present: Reports a confirmed person with a gun and directs shelter in place stating this is not a test, which clearly implies an armed threat.
    14. present: States a confirmed report of a person with a gun and directs shelter in place, with the protective directive conveying danger.
    15. present: Confirms a person with a gun near campus and orders shelter in place, implying a threat of armed violence.
    16. present: A confirmed report of a person with a gun near campus with shelter-in-place guidance implies a clear danger to people.
    17. present: It reports a confirmed person with a gun and orders shelter in place noting this is not a test, implying a serious threat of harm.
    18. present: A confirmed report of a person with a gun with shelter in place and this is not a test conveys a serious armed danger.
    19. present: Reports a confirmed person with a gun and directs shelter in place, conveying a clear armed threat to safety.
    20. present: It reports a confirmed person with a gun near campus and directs shelter in place, conveying an explicit armed threat.
    21. present: States a confirmed report of a person with a gun and directs shelter in place, implying a danger from the armed person.
    22. present: It reports a confirmed person with a gun and orders shelter in place stating this is not a test, conveying a serious armed threat.
    23. present: A confirmed report of a person with a gun near campus with shelter in place conveys an armed threat to safety.
    24. present: This reports a confirmed person with a gun and orders shelter in place, conveying a clear armed danger to people.
    25. present: Confirms a person with a gun and directs shelter in place, conveying an armed threat to people.

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

About this analysis
Context

Background

The November 25, 2013, Yale shelter-in-place hoax is widely cited as one of the earliest sophisticated 'swatting' attacks against a major U.S. university, and it occurred on a day already saturated with gun-violence news, as Connecticut authorities released their official report on the Sandy Hook Elementary School shooting the same morning. At 9:48 AM EST, an anonymous male called 911 from a pay phone at the 300 block of Columbus Avenue in New Haven, about a mile from the Yale campus. He told dispatchers his roommate was 'on his way to the Yale campus to shoot people.' New Haven Police relayed the call to Yale Police, who issued a Yale Alert at 10:17 AM EST using the phrase 'Confirmed report', although no one on campus ever sighted a gunman. For the next six hours, a multi-agency response that included Yale Police, New Haven Police, Connecticut State Police, the FBI, the ATF, and West Haven SWAT conducted room-by-room searches of Old Campus (Yale's historic first-year quad) and surrounding buildings. The shelter-in-place was lifted at approximately 4:30 PM EST, with no gunman found and no evidence of any actual threat. Police traced the 911 call to the Columbus Avenue pay phone; about five months later, in April 2014, Jeffrey Jones, 50, of Westbrook was charged with falsely reporting an incident, threatening, reckless endangerment, misuse of the 911 system, and breach of peace. The case prefigured the school-swatting wave that would later target dozens of U.S. universities in 2022-2026, and became a template for understanding how false reports made via untraceable pay phones could trigger multi-hour campus lockdowns and full SWAT mobilizations.
Analysis

Key Findings

Yale sent its first alert 29 minutes after the 911 call; the first SMS described the report as a 'Confirmed report of person with a gun,' although no gunman had been seen on campus
The 6-hour-plus shelter-in-place order (covering thousands of undergraduates trapped in Old Campus dormitories) was one of the longest documented Yale lockdowns and required a multi-agency response involving five different law-enforcement agencies
The incident is one of the earliest well-documented 'swatting' attacks against a U.S. university, prefiguring the much larger swatting wave that would target dozens of campuses 2022-2026
The hoax fell on the same day Connecticut released the official Sandy Hook Elementary School shooting report, a coincidence that shaped both the institutional response and the public reaction
Outcome
The lockdown was lifted at approximately 4:30 PM EST after a multi-agency search yielded no gunman and no evidence of any threat. Police traced the 911 call to a pay phone at 300 Columbus Avenue. About five months later, in April 2014, Connecticut authorities charged Jeffrey Jones, 50, of Westbrook, with falsely reporting an incident, threatening, reckless endangerment, misuse of the 911 system, and breach of peace. The case is widely cited as one of the earliest documented 'swatting' hoaxes targeting a major U.S. university.
Provenance

Sources

  1. News
    Lockdown lifted at Yale hours after initial 911 call (CNN)
    cnn.com
    archived copy
  2. News
    Yale issues shelter-in-place alert while authorities investigate report of person with gun (Fox News)
    foxnews.com
    archived copy
  3. News
    Yale Lockdown Caused By Hoax, Police Say (ABC News)
    abcnews.go.com
    archived copy
  4. News
    Connecticut man charged in Yale hoax threat (CBS News)
    cbsnews.com
    archived copy
  5. News
    Lockdown lifted at Yale campus after shooting threat (NBC News)
    nbcnews.com
    archived copy
  6. News
    Gunman Sighting Now Likely 'Innocent Mistake' (New Haven Independent)
    newhavenindependent.org
    archived copy
  7. News
    Arrest Made in Yale Hoax Shooting Report (NBC Connecticut)
    nbcconnecticut.com
    archived copy
Cite this case

Campus Alert Archive. "Yale University: Phoned report of a gunman prompts six-hour shelter-in-place; determined to be a hoax." Incident of November 25, 2013. Added May 2026. https://campusalertarchive.com/case/yale-university-shelter-in-place-hoax-2013-11-25/

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

Tags
swattinghoaxshelter-in-placeold-campuspay-phone-callmulti-agency-responsesandy-hook-context2013Hoax
Added May 2026Updated May 2026Via ingestion