Campus Alert Archive
Columbia

Crime alert after an affiliate is struck with a glass bottle near the main campus

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NYaggravated assaulttimely warninghigh confidence
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Under Investigation

Columbia University Public Safety issued a Clery Crime Alert after the NYPD told it on October 18, 2026 that a Columbia affiliate had been struck in the back of the head with a glass bottle in front of 80 Claremont Avenue at about 11:05 p.m. on Saturday, October 17.

Alerts
1
Response
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Killed
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Injured
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Institution
Columbia University
Private R1 · NY
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~33,000 studentsColumbia Public Safety Clery Alert
Official alert policy
Read when and how Columbia says it will use Emergency Notification System: summarized, quoted, and analyzed.
Documented Timeline

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.

INITIAL ALERTWebsite
Verified verbatim2490 chars
Clery Crime Alert Aggravated Assault On October 18, 2026, Columbia University Public Safety was informed by the NYPD of an aggravated assault that occurred on Saturday, October 17, 2026, at approximately 11:05 p.m. in front of 80 Claremont Avenue, near the Morningside Campus The NYPD reported that a Columbia University affiliate was walking on Claremont Avenue when an unknown individual approached and struck the affiliate in the back of the head with a glass bottle. CCTV footage confirmed the incident. At this time, there are no reported injuries. The individual appears to be a dark-complexioned, male-presenting person with a goatee, wearing a red and black plaid coat with gray sleeves and black pants. No other information is currently available. If you have any additional information about this incident, please contact Investigator Daley at 212-854-6634 and reference case number 26-003742. Harm Reduction Strategies: No one is ever responsible for a crime committed against them. The responsibility lies entirely with the perpetrator. If something happens, we encourage you to report it. Reporting helps protect others and ensures you can access support and services. Report the incident to the Department of Public Safety at Morningside: 212-854-5555 Manhattanville: 212-853-3333 Medical Center: 212-305-7979 Be aware of your surroundings, especially when alone at night. Avoid walking or biking alone at night. When there are less people around, you are in more danger of being targeted. Stay alert and tuned in to your environment. Remember that cell phones, earbuds, and other electronic devices divert your attention from your surroundings and block out environmental sound, which increases your vulnerability. Trust your instincts. If you feel that you may be in danger, seek out others, a store, or an open CU building that has Public Safety Officers posted. Remember to look for the Red Lion, the logo for the CU Public Safety Safe Haven program, which has screened more than 130 businesses near the Morningside, Manhattanville, and Medical Center Campuses. 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. For additional information, please visit our Clery Act website or email ps-compliance@columbia.edu
Verify this quote
Columbia Public Safety Clery Crime Alert PDF (W24), linked from the Clery Crime Alerts pagepublicsafety.columbia.edufind archived copies
Read on 2026-11-09 from the official PDF. The PDF's text layer drops "ti" and "tt" ligatures (for example "bo le", "me", "informa on"); these were restored (bottle, time, information, additional, Investigator, presenting, Reporting, committed, entirely, Manhattanville, attention, instincts, Notifications, continuous, Reduction). The word sequence of the restored text matches the PDF extraction token for token.
Bullet glyphs were not extracted; list items are kept as separate lines.
The first paragraph ends without a period after "Morningside Campus", as in the PDF.
The alert was likely also emailed; only the posted PDF was read.
Message elements

How the first alert is built

To check this alert, an AI model 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.

Clery Crime Alert Aggravated Assault On October 18, 2026, Columbia University Public Safety was informed by the NYPD of an aggravated assault that occurred on Saturday, October 17, 2026, at approximately 11:05 p.m. in front of 80 Claremont Avenue, near the Morningside Campus The NYPD reported that a Columbia University affiliate was walking on Claremont Avenue when an unknown individual approached and struck the affiliate in the back of the head with a glass bottle. CCTV footage confirmed the incident. At this time, there are no reported injuries. The individual appears to be a dark-complexioned, male-presenting person with a goatee, wearing a red and black plaid coat with gray sleeves and black pants. No other information is currently available. If you have any additional information about this incident, please contact Investigator Daley at 212-854-6634 and reference case number 26-003742. Harm Reduction Strategies: No one is ever responsible for a crime committed against them. The responsibility lies entirely with the perpetrator. If something happens, we encourage you to report it. Reporting helps protect others and ensures you can access support and services. Report the incident to the Department of Public Safety at Morningside: 212-854-5555 Manhattanville: 212-853-3333 Medical Center: 212-305-7979 Be aware of your surroundings, especially when alone at night. Avoid walking or biking alone at night. When there are less people around, you are in more danger of being targeted. Stay alert and tuned in to your environment. Remember that cell phones, earbuds, and other electronic devices divert your attention from your surroundings and block out environmental sound, which increases your vulnerability. Trust your instincts. If you feel that you may be in danger, seek out others, a store, or an open CU building that has Public Safety Officers posted. Remember to look for the Red Lion, the logo for the CU Public Safety Safe Haven program, which has screened more than 130 businesses near the Morningside, Manhattanville, and Medical Center Campuses. 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. For additional information, please visit our Clery Act website or email ps-compliance@columbia.edu

  • Sourceabsent0/0

    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.

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  • Hazardabsent0/0

    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.

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  • Locationabsent0/0

    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.

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  • Guidanceabsent0/0

    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.

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  • Timeabsent0/0

    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.

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  • Impactabsent0/0

    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.

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

About this analysis
Context

Background

Columbia posts each Clery Crime Alert as a numbered PDF on its Clery Crime Alerts page. Two more followed within four days: e-scooter thefts outside Greene and Philosophy Halls on October 19 and a fondling report at the Lerner Hall newsstand on October 21.
Analysis

Key Findings

The alert says CCTV confirmed the incident while also saying no injuries were reported.
Harm-reduction advice opens with a statement that victims are never responsible for crimes against them.
Outcome
The alert said there were no reported injuries and gave a suspect description. No arrest was reported in the sources seen.
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
    Clery Crime Alerts (Columbia University Public Safety)
    publicsafety.columbia.edu
    archived copy
  2. Official
    Clery Crime Alert: Aggravated Assault, 80 Claremont (PDF)
    publicsafety.columbia.edu
    archived copy
Cite this case

Campus Alert Archive. "Columbia University: Crime alert after an affiliate is struck with a glass bottle near the main campus." Incident of October 17, 2026. Added November 2026. https://campusalertarchive.com/case/columbia-university-80-claremont-avenue-aggravated-assault-clery-crime-alert-2026-10-17/

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

Tags
2026backfill-2026-10-12aggravated-assaultprivate-r1new-yorkivyclery-crime-alerttimely-warningUnder Investigation
Added November 2026Updated November 2026Via ingestion