Bike thefts at Earl Hall Gate and the Black Building
AI-generated · every claim is source-linkedColumbia Public Safety issued Clery Crime Alert 2025-W21.
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Alert Sequence
1 message in sequence · 1 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.
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.
Crime Alert Bike Thefts Columbia University Public Safety has been notified of a series of three bike thefts that occurred near the Morningside and Medical Center campuses within the last month. The incidents were committed by the same suspect, a light complexioned, male-presenting person, with dark hair, usually sporting a stubble. All three incidents were reported to Public Safety and the NYPD. The first incident occurred on August 11 at around 10:04 a.m in front of Earl Gate on West 117th Street and Broadway. The second incident occurred on August 27 at around 6:07 a.m. at the Black Building bike racks on West 168th Street and Fort Washington Avenue. The third incident occurred on September 3 at around 5:41 a.m. also at the Black Building bike racks on West 168th Street and Fort Washington Avenue. We strongly encourage anyone who experiences or witnesses a crime to report it to both Columbia University Public Safety (Morningside (212-854-2797 / Manhattanville (212-853-3301) / Medical Center (212-305-8100) and the NYPD. Timely and accurate reporting helps enhance awareness of incidents occurring in and around our campuses, enabling more effective resource allocation and communication with the community. Safety Tips Public Safety offers a bike regitration program designed to recover and identify your bike in the event of a theft. Bike registration is FREE and has aided in the recovery of several stolen bicycles. A unique ID is engraved and registered with the NYPD and a highly visible police decal is placed on the bike to discourage theft. The next Ride Your Bike to Campus day will be held at the Medical Center campus on Friday, September 12. It is important to always lock your bike properly with a quality U-lock or heavy-duty chain to secure both the frame and at least one wheel. Do not lock your bike on scaffolding or street signs as those structures are easy to dismantle. Public Safety offers Kryptonite brand bike locks at a discounted price. For more information about Ride Your Bike to Campus day or how to buy discounted bike locks, please visit our Crime Prevention Programs website at publicsafety.columbia.edu/content/crime-prevention-programs# DISCLAIMER: Clery Crime Alerts (Timely Warning Notifications) are distributed pursuant to the Jeanne Clery Campus Safety Act. Columbia University is required to alert the campus community when certain crimes occur in our Clery Act defined campuses that represent a serious or continuous threat to the community. To see this and other Clery Crime Alerts please visit our Public Safety website. For more information about Columbia University’s Clery Act compliance efforts, please contact the Department’s Clery Act Compliance Director, Roberto A. Pineda Sanchez at ps-compliance@columbia.edu.
Sourcepresent25/25
Final assessment
All 25 reads find Source present: the Crime Alert header and Columbia University Public Safety identify the issuing authority, with the NYPD also named.
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
- present: The message names Columbia University Public Safety as the notified authority, along with the NYPD.
- present: "Crime Alert" is a branded title and "Columbia University Public Safety" is the named authority.
- present: The message is a Crime Alert from Columbia University Public Safety, which names the issuing authority.
- present: Columbia University Public Safety is named as the notifying authority and as the agency to contact.
- present: "Crime Alert" and "Columbia University Public Safety" identify the issuing authority.
- present: Crime Alert is issued in the name of Columbia University Public Safety, with NYPD also cited.
- present: Crime Alert from Columbia University Public Safety identifies the sender.
- present: The Crime Alert opens with Columbia University Public Safety as the notifying agency.
- present: Columbia University Public Safety is named as the notified issuer and reporting contact, along with the NYPD.
- present: Columbia University Public Safety is named as the notifier and as the campus reporting contact for this Crime Alert.
- present: The Crime Alert is issued in the name of Columbia University Public Safety, the named authority.
- present: The "Crime Alert" header and "Columbia University Public Safety" identify the issuing authority.
- present: Columbia University Public Safety is named as the agency notified of the thefts and as the reporting contact.
- present: Columbia University Public Safety is named as the notifying agency and contact, with campus Public Safety phone numbers listed.
- present: Columbia University Public Safety is named as notified of the thefts and as the reporting contact, with Columbia University in the disclaimer.
- present: Columbia University Public Safety is named as the notifying office and issuer, with campus Public Safety phone numbers.
- present: Crime Alert from Columbia University Public Safety identifies the sender.
- present: Columbia University Public Safety is named as the speaker issuing this Crime Alert.
- present: The Crime Alert brand and Columbia University Public Safety identify the sender.
- present: Columbia University Public Safety is named as the notifying agency and as a reporting contact with the NYPD.
- present: The Crime Alert header and Columbia University Public Safety as the notifying office identify the source.
- present: The Crime Alert is issued in the name of Columbia University Public Safety.
- present: Columbia University Public Safety is named as the notified authority and Columbia University as the Clery alerter.
- present: The heading "Crime Alert" and "Columbia University Public Safety" identify the issuing authority.
- present: "Crime Alert" and "Columbia University Public Safety" identify the sender.
Hazardpresent25/25
Final assessment
All 25 reads find Hazard present because the text names a series of bike thefts as the specific crime.
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
- present: It names a series of "bike thefts" as the specific crime.
- present: It names a series of "Bike Thefts" as the specific crime.
- present: It names a series of Bike Thefts as the specific threat.
- present: It names a series of bike thefts as the specific threat.
- present: The message names "Bike Thefts" as the specific crime.
- present: It names Bike Thefts as the specific threat, a series of three by the same suspect.
- present: It names a series of Bike Thefts as the threat.
- present: It names a series of bike thefts as the specific threat.
- present: It names bike thefts as the specific threat in a series of three incidents.
- present: It names a series of three bike thefts by the same suspect, a specific crime type.
- present: It names a specific threat: a series of "Bike Thefts" by the same suspect.
- present: The text specifies a series of "bike thefts" as the crime.
- present: The specific hazard is a series of bike thefts by the same suspect.
- present: The heading and body name a series of bike thefts as the specific threat.
- present: It names a specific threat: a series of three bike thefts by the same suspect.
- present: The specific threat is a series of bike thefts by the same suspect.
- present: The subject is a series of Bike Thefts, a specific crime hazard.
- present: The hazard is a series of bike thefts by the same suspect.
- present: It names bike thefts as the specific crime.
- present: The alert names a series of bike thefts as the specific threat.
- present: It names a series of Bike Thefts as the specific crimes.
- present: It names a series of Bike Thefts as the specific threat.
- present: The title and body specify a series of bike thefts as the threat.
- present: The message names a series of "Bike Thefts" as the specific crime.
- present: It specifies "Bike Thefts" as the hazard.
Locationpresent25/25
Final assessment
All 25 reads find Location present: thefts are near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
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
- present: Incidents are near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: Incidents were "near the Morningside and Medical Center campuses" and at Earl Gate and Black Building bike racks.
- present: Thefts occurred near the Morningside and Medical Center campuses, at Earl Gate and the Black Building bike racks.
- present: Thefts occurred near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: Thefts were near the Morningside and Medical Center campuses, including Earl Gate and Black Building bike racks.
- present: It cites the Morningside and Medical Center campuses, Earl Gate, and Black Building bike racks with street names.
- present: It cites the Morningside and Medical Center campuses, Earl Gate, and Black Building bike racks with street names.
- present: Incidents are placed near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: Locations include near the Morningside and Medical Center campuses, Earl Gate, and the Black Building bike racks.
- present: It cites the Morningside and Medical Center campuses, Earl Gate at West 117th Street and Broadway, and the Black Building bike racks.
- present: Thefts occurred near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: It cites the Morningside and Medical Center campuses, Earl Gate, and the Black Building bike racks with street names.
- present: Thefts occurred near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: It locates thefts near Morningside and Medical Center campuses, including Earl Gate on West 117th Street and Broadway and Black Building bike racks.
- present: It locates incidents near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: Incidents are near Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: Incidents are near the Morningside and Medical Center campuses, with named streets and the Black Building.
- present: Thefts are near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks with street names.
- present: Thefts occurred near the Morningside and Medical Center campuses, with named streets and the Black Building.
- present: It places the thefts near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: Thefts occurred near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks with street names.
- present: Thefts are near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks.
- present: It names Morningside and Medical Center campuses, Earl Gate at West 117th and Broadway, and Black Building bike racks.
- present: Thefts occurred near the Morningside and Medical Center campuses, including Earl Gate and the Black Building bike racks with street names.
- present: Incidents are near the Morningside and Medical Center campuses and at named streets and the Black Building bike racks.
Guidancepresent25/25
Final assessment
All 25 reads find Guidance present: readers are told to lock bikes with a U-lock or heavy chain, not lock to scaffolding or signs, and to report crimes.
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
- present: It tells people to report crimes, lock bikes with a quality U-lock, and not lock them on scaffolding or street signs.
- present: Readers are told to lock bikes with a U-lock or chain, avoid scaffolding or signs, and register bikes.
- present: It tells people to lock bikes with a quality U-lock, not lock to scaffolding or signs, and to use bike registration.
- present: Readers are told to lock bikes with a quality U-lock or heavy chain and not to lock them on scaffolding or street signs.
- present: Readers are told to lock bikes with a U-lock or heavy chain and not lock them to scaffolding or street signs.
- present: It instructs locking bikes with a U-lock, not locking to scaffolding or signs, and reporting crimes to Public Safety and NYPD.
- present: Readers are told to lock the frame and a wheel with a U-lock and not to lock to scaffolding or signs.
- present: It instructs people to report crimes, register bikes, and lock the frame and a wheel with a U-lock rather than scaffolding or signs.
- present: It tells people to report crimes to Public Safety and the NYPD, lock bikes with a U-lock, and avoid locking to scaffolding.
- present: It instructs readers to lock the frame and a wheel with a U-lock or heavy chain, not lock to scaffolding or signs, and report crimes.
- present: Readers are told to lock bikes with a quality U-lock or heavy chain and to report crimes to Public Safety and the NYPD.
- present: Readers are told to report crimes and to lock bikes with a U-lock or heavy chain, not to scaffolding or signs.
- present: Readers are told to lock the frame and a wheel with a U-lock or heavy chain and not to lock bikes to scaffolding or street signs.
- present: Readers are told to lock bikes with a quality U-lock, not lock to scaffolding or street signs, and to report crimes to Public Safety and NYPD.
- present: It urges reporting to Public Safety and NYPD, locking bikes with a U-lock, and not locking to scaffolding or street signs.
- present: It instructs readers to lock the frame and a wheel with a quality U lock and not to lock bikes to scaffolding or street signs.
- present: Readers are told to lock bikes with a U-lock, not lock to scaffolding, and to use bike registration.
- present: It tells people to report crime, lock the frame and a wheel with a U-lock, and not lock bikes to scaffolding or signs.
- present: Readers are told to lock bikes with a quality U-lock and not lock them to scaffolding or street signs.
- present: Readers are told to lock the frame and a wheel with a quality lock, avoid scaffolding and street signs, and report crimes.
- present: It instructs locking bikes with a U-lock or chain, not locking to scaffolding or signs, and reporting crimes to Public Safety and NYPD.
- present: Recipients are told to lock bikes with a quality U-lock, avoid scaffolding, and use the free bike registration program.
- present: It tells people to lock bikes with a quality U-lock, avoid scaffolding, and report crimes to Public Safety and NYPD.
- present: It instructs readers to lock bikes with a quality U-lock or chain, not lock to scaffolding or street signs, and to report crimes to Public Safety and NYPD.
- present: Readers are told to lock bikes with a U-lock or heavy chain, not lock to scaffolding or signs, and to report crimes.
Timepresent25/25
Final assessment
All 25 reads find Time present via dates and clock times such as August 11 at around 10:04 a.m., plus within the last month.
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
- present: It dates thefts such as August 11 at around 10:04 a.m. and says they occurred within the last month.
- present: It gives times such as "August 11 at around 10:04 a.m" and says the series occurred "within the last month."
- present: It says the thefts occurred within the last month and gives dates and clock times such as August 11 at around 10:04 a.m.
- present: Incidents are placed within the last month, with clock times such as August 11 at around 10:04 a.m.
- present: It says "within the last month" and gives clock times such as "around 10:04 a.m."
- present: It says within the last month and gives dated times such as August 11 at around 10:04 a.m.
- present: Incidents are within the last month, with times such as August 11 at around 10:04 a.m.
- present: It says the thefts occurred within the last month and gives dates and times such as August 11 at around 10:04 a.m.
- present: Incidents are placed within the last month, with times such as August 11 at around 10:04 a.m.
- present: It says the thefts occurred within the last month and gives clock times on August 11, August 27, and September 3.
- present: It says the thefts occurred "within the last month" and gives times such as August 11 at around 10:04 a.m.
- present: Thefts occurred "within the last month," with times such as "August 11 at around 10:04 a.m."
- present: It says the thefts occurred within the last month and gives clock times such as August 11 at around 10:04 a.m.
- present: It says the thefts occurred within the last month and gives times such as August 11 at around 10:04 a.m.
- present: It says within the last month and gives times such as August 11 at around 10:04 a.m. and September 3 at around 5:41 a.m.
- present: It places the series within the last month and gives clock times on August 11, August 27, and September 3.
- present: It cites times such as August 11 at around 10:04 a.m. and within the last month.
- present: It gives clock times on August 11, August 27, and September 3, plus "within the last month."
- present: It cites within the last month and clock times such as August 11 at around 10:04 a.m.
- present: It says the thefts occurred within the last month and gives dates and clock times for all three incidents.
- present: It says the series occurred within the last month and gives dated times such as August 11 at around 10:04 a.m.
- present: Thefts occurred within the last month, with dated times such as August 11 at around 10:04 a.m.
- present: It says the thefts occurred within the last month and gives August 11, August 27, and September 3 clock times.
- present: It says the thefts occurred "within the last month" and gives dates and times such as August 11 at around 10:04 a.m.
- present: Thefts occurred "within the last month" with clock times on August 11, August 27, and September 3.
Impactabsent0/25
Final assessment
All 25 reads find Impact absent: stolen bikes name the property crime without stating injury, danger, or other consequences.
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
- absent: Bike theft is the hazard; the text does not describe injury, danger, or other impacts.
- absent: Bike theft is named and described, but no consequence or severity such as danger or injury is stated.
- absent: Bike theft is named and described but no injury, danger, or other consequence or severity is stated.
- absent: Bike theft is named with no statement of injury, danger, or other severity.
- absent: Bikes were stolen, but the text does not state injury, danger, or other severity beyond the thefts.
- absent: Bike theft is named without stating injury, danger, or other consequences beyond the theft.
- absent: No injury, danger, or other consequence beyond the thefts themselves is stated.
- absent: The thefts are described as property crimes only, with no statement of injury, danger, or other harm.
- absent: Bike theft is named and described, but no injury, danger, or other consequence beyond the theft is stated.
- absent: Stolen bikes are described, but the text does not state danger, injury, or other consequences of the thefts.
- absent: Bike theft is named without stated injury, danger, or other consequence beyond the stolen property itself.
- absent: Bike theft is named, but no injury, danger, or other consequence language is given.
- absent: Stolen bicycles are the hazard itself, with no statement of injury, danger, or other severity.
- absent: Bike theft is named and described, but the text does not state extra severity or what the hazard could do beyond the thefts.
- absent: Bike theft is named and described, but no consequence or severity language such as dangerous or risk of injury appears.
- absent: Bike theft is named, but the text does not state injury, danger, or other consequences beyond the stolen bikes.
- absent: Theft of bikes is the hazard name, with no statement of injury, danger, or other severity.
- absent: Stolen bikes name the property crime without stating injury, danger, or other effects beyond the theft.
- absent: Stolen bikes are the crime itself, with no injury, danger, or other harm stated.
- absent: Stolen bicycles are the named hazard, with no extra statement of injury, danger, or severity.
- absent: Bike theft is named and described, but no injury, danger, or other consequence language is given.
- absent: Stolen bikes are the hazard itself, with no stated injury, danger, or other consequence.
- absent: Bike theft is named without injury, danger, or other consequence language beyond the crime itself.
- absent: The text does not state injury, danger, or other severity beyond naming thefts and stolen bicycles.
- absent: Bike theft is named and described but no injury, danger, or other consequence language appears.
Coded by SuperGrok Heavy 4.5
Systematic AI judgments with visible reasoning, not human-validated codings.
Background
Key Findings
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.
- Official
Campus Alert Archive. "Columbia University: Bike thefts at Earl Hall Gate and the Black Building." Incident of August 11, 2025. Added September 2026. https://campusalertarchive.com/case/columbia-university-earl-gate-black-building-bike-thefts-2025-08-11/
Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.