{
  "id": "2024-01-25-manhattan-college-lee-hall-lockdown",
  "slug": "manhattan-college-lee-hall-lockdown-2024-01-25",
  "institution": {
    "name": "Manhattan College",
    "shortName": "MC",
    "state": "NY",
    "type": "private-masters",
    "alertSystemName": "MC JASPER911",
    "enrollment": 4000
  },
  "incident": {
    "date": "2024-01-25",
    "type": "armed-person",
    "cleryCategory": "emergency-notification",
    "resolution": "unfounded",
    "headline": "Report of a possible gun in Lee Hall prompts lockdown; no firearm recovered",
    "headlinePublic": "Report of a possible gun in Lee Hall prompts lockdown; no firearm recovered",
    "summary": "On the afternoon of January 25, 2024, [Manhattan College's Riverdale, Bronx campus went into a campus-wide lockdown](https://mcquad.org/2024/01/30/alleged-gunman-in-lee-hall-prompts-a-campus-wide-lockdown/) after a report of a possible person with a gun inside Lee Hall, a residence hall. The MC JASPER911 alert system pushed an emergency text to students, parents, and faculty as NYPD officers responded. The individual was taken into custody, but [no firearm was recovered](https://mcquad.org/2024/01/30/alleged-gunman-in-lee-hall-prompts-a-campus-wide-lockdown/).",
    "outcome": "An individual was taken into custody by the NYPD; no weapon was found. A JASPER911 text alert lifted the lockdown a little over an hour after the initial alert ('incident over. Lockdown is ended. No weapons observed or recovered.'); President Milo Riverso then sent a follow-up email to the campus community confirming the all-clear.",
    "casualties": {
      "killed": 0,
      "injured": 0
    }
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "initial",
      "timestampApprox": "Afternoon of January 25, 2024",
      "channel": "sms",
      "verbatimText": "possible person with a gun in Lee Hall. stay away or lockdown",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://mcquad.org/2024/01/30/alleged-gunman-in-lee-hall-prompts-a-campus-wide-lockdown/",
      "sourceDescription": "The Quadrangle (Manhattan College student newspaper)",
      "annotations": [
        "Sent on the afternoon of January 25, 2024 via the MC JASPER911 mass-notification system to students, parents, and faculty",
        "The lowercase styling and instruction to either avoid the area OR lock down captures the constraint environment of an SMS-first alert in an active threat",
        "Lee Hall is a residence hall on Manhattan College's Riverdale, Bronx campus and was at near full capacity at the time of the alert"
      ],
      "characterCount": 61
    },
    {
      "sequence": 2,
      "type": "all-clear",
      "timestampApprox": "A little over an hour after the initial alert on January 25, 2024",
      "channel": "sms",
      "verbatimText": "incident over. Lockdown is ended. No weapons observed or recovered.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://mcquad.org/2024/01/30/alleged-gunman-in-lee-hall-prompts-a-campus-wide-lockdown/",
      "sourceDescription": "The Quadrangle (Manhattan College student newspaper) quoting the verbatim JASPER911 all-clear text",
      "annotations": [
        "Lifted via the same JASPER911 SMS channel that delivered the initial alert, preserving the lowercase styling of the original text",
        "The Quadrangle reported the all-clear came 'a little over an hour after the incident'",
        "The all-clear was followed later by a longer email from President Milo Riverso providing a formal narrative, the SMS-first / email-second pattern familiar in Clery emergency notifications"
      ],
      "characterCount": 67
    }
  ],
  "context": "Manhattan College (now [Manhattan University](https://manhattan.edu/) following its 2024 redesignation) is a private Lasallian institution in the Riverdale section of the Bronx. On the afternoon of [Thursday, January 25, 2024, the campus went into immediate lockdown](https://mcquad.org/2024/01/30/alleged-gunman-in-lee-hall-prompts-a-campus-wide-lockdown/) after a report of a possible person with a gun inside Lee Hall, one of the school's two main residence halls. NYPD officers responded within minutes, students sheltered in classrooms and rooms, and parents flooded phone lines after the [MC JASPER911 alert](https://inside.manhattan.edu/offices/public-safety/emergency-alerts.php) reached families. An individual was taken into custody and no weapon was recovered. A little over an hour after the initial alert, JASPER911 sent a brief verbatim all-clear ('incident over. Lockdown is ended. No weapons observed or recovered.'); President Milo Riverso later followed with a longer narrative email, a familiar pattern in Clery emergency notifications where the SMS-first alert is followed by an email walk-through.",
  "sources": [
    {
      "title": "Alleged Gunman in Lee Hall Prompts a Campus-Wide Lockdown (The Quadrangle)",
      "url": "https://mcquad.org/2024/01/30/alleged-gunman-in-lee-hall-prompts-a-campus-wide-lockdown/",
      "type": "student-newspaper",
      "accessDate": "2026-05-03"
    },
    {
      "title": "Emergency Alerts (Manhattan University Public Safety)",
      "url": "https://inside.manhattan.edu/offices/public-safety/emergency-alerts.php",
      "type": "official-archive",
      "accessDate": "2026-05-03"
    },
    {
      "title": "Annual Security and Fire Safety Report 2024 (Manhattan College)",
      "url": "https://content.manhattan.edu/public-safety-files/annual-security-report.pdf",
      "type": "clery-asr",
      "accessDate": "2026-05-03"
    }
  ],
  "confidence": "high",
  "tags": [
    "armed-person",
    "lockdown",
    "residence-hall",
    "bronx",
    "new-york",
    "private-masters",
    "jasper911",
    "unfounded",
    "lee-hall"
  ],
  "dateAdded": "2026-05-03",
  "lastUpdated": "2026-05-06",
  "addedBy": "ingestion"
}