{
  "id": "2024-12-18-university-of-michigan-ncrc-self-harm-threat",
  "slug": "university-of-michigan-ncrc-self-harm-threat-2024-12-18",
  "institution": {
    "name": "University of Michigan",
    "shortName": "U-M",
    "state": "MI",
    "type": "public-r1",
    "alertSystemName": "U-M Emergency Alert",
    "alertPlatform": "Rave",
    "enrollment": 52000
  },
  "incident": {
    "date": "2024-12-18",
    "type": "police-activity",
    "cleryCategory": "emergency-notification",
    "resolution": "confirmed-threat",
    "headline": "Self-harm standoff in a research complex parking lot; all-clear in about two hours",
    "headlinePublic": "Self-harm standoff in a research complex parking lot; all-clear in about two hours",
    "summary": "On the evening of December 18, 2024, the University of Michigan Division of Public Safety and Security issued a [U-M Emergency Alert at 9:24 p.m. EST warning the campus community to avoid Building 520 of the North Campus Research Complex](https://dpss.umich.edu/news-and-alerts/emergency-alerts/u-m-emergency-alert-12-18-24-self-harm-threat-all-clear/). The alert was [later expanded](https://www.clickondetroit.com/all-about-ann-arbor/2024/12/19/what-we-know-about-last-nights-emergency-situation-at-u-of-m-campus-building/) to a wider 2800 Plymouth Road perimeter as an individual threatening self-harm remained barricaded in a parking lot between the NCRC and the University of Michigan Transportation Research Institute (UMTRI). Officers contained the situation and issued the all-clear at 11:37 p.m. EST.",
    "outcome": "The standoff involved a single individual threatening self-harm in a vehicle in the parking lot east of Huron Parkway. No one else was harmed. The all-clear came at approximately 11:37 p.m. EST, about two hours and 13 minutes after the initial alert. U-M DPSS did not publicly release further details about the individual, citing privacy considerations consistent with HIPAA and self-harm reporting norms.",
    "casualties": {
      "killed": 0,
      "injured": 0
    }
  },
  "alerts": [
    {
      "sequence": 1,
      "timestamp": "2024-12-18T21:25:02-05:00",
      "channel": "twitter-x",
      "audience": "campus",
      "verbatimText": "Ann Arbor: 2124 Emergency NCRB520. Avoid the area. Officers on scene. Do not enter the area until cleared. Updates: http://dpss.umich.edu https://dpss.umich.edu",
      "characterCount": 160,
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://x.com/UMich/status/1869569601669046659",
      "sourceDescription": "@UMich on X (verbatim)",
      "annotations": [
        "Official campus X cascade recovered in PR6."
      ],
      "type": "initial"
    },
    {
      "sequence": 2,
      "type": "update",
      "timestamp": "2024-12-18T21:44:26-05:00",
      "channel": "twitter-x",
      "verbatimText": "Ann Arbor: 2144 UPDATE LOCATION NCRC#520. 2800 PLYMOUTH RD. OFFICERS IN AREA. PLEASE AVOID THE AREA. Updates: http://dpss.umich.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://x.com/UMich/status/1869574484589773064",
      "sourceDescription": "@UMich on X (verbatim)",
      "annotations": [
        "Verbatim text confirmed from the U-M DPSS official archive at news.dpss.umich.edu/2024/12/4797",
        "Alert includes the time stamp '9:24 p.m.' embedded in the message body, a U-M DPSS formatting convention",
        "Names NCRC Building 520 specifically rather than the whole complex, narrowing the avoidance perimeter",
        "Corrected to exact fxtwitter display text."
      ],
      "characterCount": 131
    },
    {
      "sequence": 3,
      "type": "update",
      "timestamp": "2024-12-18T22:26:00-05:00",
      "channel": "sms",
      "verbatimText": "UPDATE #2: 10:26 p.m. Situation is ongoing at the parking lot between North Campus Research Complex (NCRC) and UMTRI (University of MI Transportation Research Institute). East side of Huron Parkway. Avoid all surrounding areas.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://news.dpss.umich.edu/2024/12/4797",
      "sourceDescription": "U-M DPSS emergency alert archive — UPDATE #2",
      "annotations": [
        "Exact UPDATE #2 line from official DPSS 12/18/24 chronology"
      ],
      "characterCount": 227
    },
    {
      "sequence": 4,
      "type": "update",
      "timestamp": "2024-12-18T23:14:00-05:00",
      "channel": "sms",
      "verbatimText": "UPDATE #3: 11:14 p.m. Situation ongoing. Officers on scene. Individual threatening self-harm. Continue to avoid the area.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://news.dpss.umich.edu/2024/12/4797",
      "sourceDescription": "U-M DPSS emergency alert archive — UPDATE #3",
      "annotations": [
        "Exact UPDATE #3 line from official DPSS 12/18/24 chronology"
      ],
      "characterCount": 121
    },
    {
      "sequence": 5,
      "type": "all-clear",
      "timestamp": "2024-12-18T23:37:00-05:00",
      "channel": "sms",
      "verbatimText": "ALL CLEAR: Ann Arbor Update: 11:37 p.m. ALL CLEAR It is safe to resume regular activities. For more information, visit: dpss.umich.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://news.dpss.umich.edu/2024/12/4797",
      "sourceDescription": "U-M DPSS emergency alert archive — ALL CLEAR",
      "annotations": [
        "Exact ALL CLEAR line from official DPSS 12/18/24 chronology"
      ],
      "characterCount": 134
    }
  ],
  "responseTimeMinutes": 0,
  "context": "The University of Michigan's December 18, 2024 emergency alert was issued by the [Division of Public Safety and Security (DPSS)](https://dpss.umich.edu/news-and-alerts/emergency-alerts/) at 9:24 p.m. EST and asked the campus to avoid Building 520 of the [North Campus Research Complex](https://research.umich.edu/about-research/research-locations/north-campus-research-complex/), the sprawling former Pfizer pharmaceutical campus on Plymouth Road that U-M acquired in 2009. About 20 minutes after the initial alert, [DPSS expanded the avoidance perimeter](https://www.fox2detroit.com/news/university-michigan-alerts-residents-avoid-surrounding-area-campus-near-huron-parkway) from a single building to the broader 2800 Plymouth Road address. Around 10:26 p.m. EST, officials confirmed the situation was unfolding in the parking lot between the NCRC and the University of Michigan Transportation Research Institute (UMTRI), on the east side of Huron Parkway. At 11:14 p.m. EST, U-M characterized the situation publicly for the first time as involving an individual threatening self-harm, a choice that communicated there was no third-party threat without naming the individual. The [all-clear was issued at 11:37 p.m. EST](https://wwmt.com/news/state/u-of-m-issues-alert-to-avoid-parking-lot-near-north-campus-due-to-ongoing-situation), about two hours and 13 minutes after the initial alert. The DPSS permalink page preserves the alert under the title 'U-M Emergency Alert 12/18/24: Self-harm Threat [All Clear].' The incident drew attention because mental-health emergencies have not historically triggered the same campus-wide emergency notifications that violent threats do, and U-M's choice to push a Rave alert for a contained self-harm standoff illustrates the evolving role of mass notification in non-attacker scenarios.",
  "keyFindings": [
    "U-M used its campus-wide emergency alert system for a contained self-harm standoff, a documented example of mass notification in a non-attacker scenario",
    "The alert scope was expanded (one building to a wider perimeter) as the situation moved from inside Building 520 to an outdoor parking lot, demonstrating dynamic perimeter adjustment",
    "By publicly labeling the incident as a 'self-harm threat', DPSS communicated that there was no third-party threat while withholding identifying details"
  ],
  "sources": [
    {
      "title": "U-M Emergency Alert 12/18/24: Self-harm Threat [All Clear] (U-M DPSS)",
      "url": "https://news.dpss.umich.edu/2024/12/4797",
      "type": "official-archive"
    },
    {
      "title": "University of Michigan @UMich X post — Update NCRC#520 (December 18, 2024)",
      "url": "https://x.com/UMich/status/1869574484589773064",
      "type": "official-social"
    },
    {
      "title": "What we know about last night's emergency situation at U of M campus building (ClickOnDetroit / WDIV-TV)",
      "url": "https://www.clickondetroit.com/all-about-ann-arbor/2024/12/19/what-we-know-about-last-nights-emergency-situation-at-u-of-m-campus-building/",
      "type": "local-media"
    },
    {
      "title": "University of Michigan says situation is 'all clear' in surrounding area near Huron Parkway (FOX 2 Detroit)",
      "url": "https://www.fox2detroit.com/news/university-michigan-alerts-residents-avoid-surrounding-area-campus-near-huron-parkway",
      "type": "local-media"
    },
    {
      "title": "U of M issues alert to avoid parking lot near North Campus due to ongoing 'situation' (Newschannel 3 WWMT)",
      "url": "https://wwmt.com/news/state/u-of-m-issues-alert-to-avoid-parking-lot-near-north-campus-due-to-ongoing-situation",
      "type": "local-media"
    },
    {
      "title": "U-M Emergency Alerts (DPSS index page)",
      "url": "https://dpss.umich.edu/news-and-alerts/emergency-alerts/",
      "type": "official-archive"
    },
    {
      "title": "@UMich on X (verbatim)",
      "url": "https://x.com/UMich/status/1869569601669046659",
      "type": "official-archive"
    }
  ],
  "confidence": "high",
  "tags": [
    "police-activity",
    "self-harm",
    "big-ten",
    "michigan",
    "ncrc",
    "huron-parkway",
    "dpss",
    "mental-health-response"
  ],
  "dateAdded": "2026-05-13",
  "lastUpdated": "2026-07-19",
  "addedBy": "ingestion"
}