Campus Alert Archive
UCR

An Assault Rifle, a Journal of Violent Drawings: How UC Riverside Quietly Defused a Plot Inside North District

CAarmed personadvisoryhigh confidence
Confirmed Threat

On May 3, 2024, UC Riverside police executed a search warrant on a North District residential apartment and recovered an assault rifle, ammunition, five high-capacity magazines, and a journal containing hand-drawn images of a violent act. The student was placed on interim suspension and ordered off campus. Four days later, on May 7, the student was arrested in Los Angeles County and booked into Riverside County Jail.

Alerts
2
Response
—
Killed
0
Injured
0
Institution
University of California, Riverside
Public R1 · CA
~26,000 studentsUCR Emergency Notification System
Confirmed Timeline

Alert Sequence

2 messages in sequence · 2 verified verbatim

INITIAL ALERTEmail
Verified verbatimInside UCR official campus announcement723 chars
Dear UCR community: On Friday, May 3, the UC Riverside Police Department executed a search warrant in a campus residence hall after evidence of a weapon was found on campus. A search of a room in the North District residential apartments revealed an assault rifle registered to a student, ammunition, five high-capacity magazines, and hand-drawn images in a journal depicting a violent act. The student has been placed on interim suspension for alleged violation of several university policies and was ordered to leave campus, has complied, and is ordered not to return to campus pending the outcome of an administrative hearing. There is no indication at this time that the incident is related to any recent campus events.
Posted to Inside UCR on May 5, 2024 at approximately 4:00 p.m. PDT, two days after the search warrant was executed
The two-day delay between discovery (May 3) and notification (May 5) reflects a Clery 'continuing threat' assessment that the immediate danger had passed
Use of the phrase 'hand-drawn images in a journal depicting a violent act' is unusually specific for a campus alert and likely reflects legal review prior to publication
FOLLOW-UPEmail+2d
Verified verbatimInside UCR official campus announcement495 chars
Dear UCR community: Today, the UC Riverside Police Department secured an arrest warrant for the student associated with the weapon discovered on campus on May 3. The student was arrested in Los Angeles County and is being transported to Riverside County Jail. The case will be submitted to the Riverside County District Attorney for filing of charges. There continues to be no indication this incident is related to any other campus events. Thank you for your continued patience and cooperation.
Posted on May 7, 2024, four days after the search warrant was executed
Confirms the suspect's transport to Riverside County Jail; the student had been off-campus since May 3 under university order
Repeats the no-link-to-campus-events disclaimer from the May 5 announcement, addressing implicit speculation about a potential mass casualty plot
Context

Background

UC Riverside's May 2024 weapon discovery in the North District residential apartments is a rare case of a campus apparently averting a mass shooting. The discovery came from an unspecified tip that prompted UCR Police to seek a search warrant. Inside the student's apartment, officers found an assault rifle, ammunition, five high-capacity magazines, and a journal containing hand-drawn images depicting violent acts. The university chose to communicate the incident via Inside UCR, the campus news platform, rather than the broader Emergency Notification System, classifying the event as an advisory rather than a Clery emergency notification. This reflects the post-discovery posture: by the time the May 5 message went out, the student had already been removed from campus. The student was later charged with building an AR-15-style rifle in the campus apartment.
Analysis

Key Findings

Pre-attack interventions like this are underrepresented in campus alert archives because they don't trigger emergency notifications
The two-day delay between weapon discovery and community notification reflects a Clery 'no continuing threat' assessment
UCR's choice to use Inside UCR (campus news) rather than the Emergency Notification System illustrates how universities triage between Clery categories
The journal of violent drawings strongly suggests pre-attack ideation but did not lead to terrorism-related charges
Outcome
Student placed on interim suspension on May 5, 2024 and ordered to leave campus pending administrative hearing. Arrest warrant served May 7, 2024 in Los Angeles County. Riverside County District Attorney charged the student with possession of an assault weapon and related offenses.
Provenance

Sources

  1. Official
    Student suspended for possessing a weapon on campus (Inside UCR)
    insideucr.ucr.edu
  2. Official
    Student with weapon on campus in police custody (Inside UCR)
    insideucr.ucr.edu
  3. News
    UC Riverside student suspended after assault rifle is found on campus (NBC Los Angeles)
    nbclosangeles.com
  4. News
    UC Riverside student accused of building AR-15-style rifle in campus apartment (CBS Los Angeles)
    cbsnews.com
Tags
armed-personweapons-discoveryaverted-attackuc-systemcaliforniariversideresidence-hallassault-rifleadvisory
Added May 2026Updated May 2026Via ingestion