Campus Alert Archive
U-M

Two Hours Outside NCRC 520: U-M Emergency Alert for a Self-Harm Standoff on Huron Parkway

MIpolice activityemergency notificationhigh confidence
Confirmed Threat

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. The alert was later expanded 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.

Alerts
4
Response
0 min
Killed
0
Injured
0
Institution
University of Michigan
Public R1 · MI
~52,000 studentsRaveU-M Emergency Alert
Confirmed Timeline

Alert Sequence

4 messages in sequence · 4 verified verbatim

INITIAL ALERTSMS
Verified verbatimU-M DPSS official emergency alerts archive (news.dpss.umich.edu) — titled 'U-M Emergency Alert 12/18/24: Self-harm Threat [All Clear]'133 chars
UM-Ann Arbor Emergency Alert: 9:24 p.m. – Emergency NCRC 520. Avoid the area. Officers on scene. Do not enter the area until cleared.
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
UPDATESMS+19 min
Verified verbatimUniversity of Michigan official @UMich X (Twitter) post, status 1869574484589773064, posted December 18, 2024100 chars
Ann Arbor: 2144 UPDATE LOCATION NCRC#520. 2800 PLYMOUTH RD. OFFICERS IN AREA. PLEASE AVOID THE AREA.
Verbatim text from the official @UMich X account post at 9:43 PM EST (military time 2144) on December 18, 2024
All-caps text in this update reflects standard U-M emergency alert broadcast format on X
Updates location from 'NCRC 520' to '2800 PLYMOUTH RD' expanding the avoidance perimeter
UPDATESMS+1h 50m
Verified verbatimU-M DPSS official emergency alerts archive (news.dpss.umich.edu/2024/12/4797)99 chars
Situation ongoing. Officers on scene. Individual threatening self-harm. Continue to avoid the area.
Verbatim text from the U-M DPSS official archive; sent at 11:14 p.m. EST on December 18, 2024
First alert in the sequence to publicly characterize the incident as involving an individual threatening self-harm
Disclosing the self-harm nature told the community there was no third-party threat while preserving the individual's privacy
ALL CLEARSMS+2h 13m
Verified verbatimU-M DPSS official emergency alerts archive (news.dpss.umich.edu/2024/12/4797) — page titled 'U-M Emergency Alert 12/18/24: Self-harm Threat [All Clear]'51 chars
All clear. It is safe to resume regular activities.
Verbatim text confirmed from the U-M DPSS official archive; sent at 11:37 p.m. EST on December 18, 2024
Terse two-sentence all-clear is the standard U-M DPSS format — no location-specific language reiterating the incident
The DPSS archive page title ('Self-harm Threat [All Clear]') provides the incident-type context that the message itself omits
Context

Background

The University of Michigan's December 18, 2024 emergency alert was issued by the Division of Public Safety and Security (DPSS) at 9:24 p.m. EST and asked the campus to avoid Building 520 of the 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 from a single building to the broader 2800 Plymouth Road address. Around 10:26 p.m., 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., U-M characterized the situation publicly for the first time as involving an individual threatening self-harm — a transparency choice intended to communicate that there was no third-party threat without naming the individual. The all-clear was issued at 11:37 p.m. EST, 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.
Analysis

Key Findings

U-M used its emergency alert system for a self-harm standoff — a use case that some peer institutions handle quietly through targeted notifications rather than mass alerts
The alert was deliberately escalated in scope (one building → 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' in the all-clear, DPSS chose transparency over the more euphemistic 'police situation,' helping the community understand there was no third-party threat
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.
Provenance

Sources

  1. Official
    U-M Emergency Alert 12/18/24: Self-harm Threat [All Clear] (U-M DPSS)
    news.dpss.umich.edu
  2. Social
    University of Michigan @UMich X post — Update NCRC#520 (December 18, 2024)
    x.com
  3. News
    What we know about last night's emergency situation at U of M campus building (ClickOnDetroit / WDIV-TV)
    clickondetroit.com
  4. News
    University of Michigan says situation is 'all clear' in surrounding area near Huron Parkway (FOX 2 Detroit)
    fox2detroit.com
  5. News
    U of M issues alert to avoid parking lot near North Campus due to ongoing 'situation' (Newschannel 3 WWMT)
    wwmt.com
  6. Official
    U-M Emergency Alerts (DPSS index page)
    dpss.umich.edu
Tags
police-activityself-harmbig-tenmichiganncrchuron-parkwaydpssmental-health-response
Added May 2026Updated May 2026Via ingestion