{
  "id": "2024-05-03-uc-riverside-assault-rifle-residence-hall",
  "slug": "uc-riverside-assault-rifle-residence-hall-2024-05-03",
  "institution": {
    "name": "University of California, Riverside",
    "shortName": "UCR",
    "state": "CA",
    "type": "public-r1",
    "alertSystemName": "UCR Emergency Notification System",
    "enrollment": 26000
  },
  "incident": {
    "date": "2024-05-03",
    "endDate": "2024-05-07",
    "type": "armed-person",
    "cleryCategory": "advisory",
    "resolution": "confirmed-threat",
    "headline": "Assault rifle and high-capacity magazines found in a campus residence; student arrested",
    "headlinePublic": "Assault rifle and high-capacity magazines found in a campus residence; student arrested",
    "summary": "On May 3, 2024, [UC Riverside police executed a search warrant](https://www.cbsnews.com/losangeles/news/uc-riverside-student-suspended-after-assault-rifle-found-on-campus/) on a [North District residential apartment](https://insideucr.ucr.edu/announcements/2024/05/05/student-suspended-possessing-weapon-campus) 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](https://insideucr.ucr.edu/announcements/2024/05/07/student-weapon-campus-police-custody) and booked into Riverside County Jail.",
    "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.",
    "casualties": {
      "killed": 0,
      "injured": 0
    }
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "initial",
      "timestamp": "2024-05-05T16:00:00-07:00",
      "channel": "email",
      "verbatimText": "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.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://insideucr.ucr.edu/announcements/2024/05/05/student-suspended-possessing-weapon-campus",
      "sourceDescription": "Inside UCR official campus announcement",
      "annotations": [
        "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"
      ],
      "characterCount": 723
    },
    {
      "sequence": 2,
      "type": "follow-up",
      "timestamp": "2024-05-07T17:00:00-07:00",
      "channel": "email",
      "verbatimText": "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.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://insideucr.ucr.edu/announcements/2024/05/07/student-weapon-campus-police-custody",
      "sourceDescription": "Inside UCR official campus announcement",
      "annotations": [
        "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 speculation that followed the weapon discovery"
      ],
      "characterCount": 495
    }
  ],
  "context": "UC Riverside's May 2024 weapon discovery in the [North District residential apartments](https://www.nbclosangeles.com/news/local/uc-riverside-student-suspended-after-assault-rifle-is-found-on-campus/3405306/) 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](https://abc7.com/uc-riverside-seizes-rifle-ammunition-from-student-housing/14770970/), 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](https://www.cbsnews.com/losangeles/news/uc-riverside-student-charged-for-building-ar-15-in-campus-apartment/) in the campus apartment.",
  "keyFindings": [
    "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 raised concern about pre-attack ideation but did not lead to terrorism-related charges"
  ],
  "sources": [
    {
      "title": "Student suspended for possessing a weapon on campus (Inside UCR)",
      "url": "https://insideucr.ucr.edu/announcements/2024/05/05/student-suspended-possessing-weapon-campus",
      "type": "official-archive"
    },
    {
      "title": "Student with weapon on campus in police custody (Inside UCR)",
      "url": "https://insideucr.ucr.edu/announcements/2024/05/07/student-weapon-campus-police-custody",
      "type": "official-archive"
    },
    {
      "title": "UC Riverside student suspended after assault rifle is found on campus (NBC Los Angeles)",
      "url": "https://www.nbclosangeles.com/news/local/uc-riverside-student-suspended-after-assault-rifle-is-found-on-campus/3405306/",
      "type": "local-media"
    },
    {
      "title": "UC Riverside student accused of building AR-15-style rifle in campus apartment (CBS Los Angeles)",
      "url": "https://www.cbsnews.com/losangeles/news/uc-riverside-student-charged-for-building-ar-15-in-campus-apartment/",
      "type": "local-media"
    }
  ],
  "confidence": "high",
  "tags": [
    "armed-person",
    "weapons-discovery",
    "averted-attack",
    "uc-system",
    "california",
    "riverside",
    "residence-hall",
    "assault-rifle",
    "advisory"
  ],
  "dateAdded": "2026-05-03",
  "lastUpdated": "2026-05-28",
  "addedBy": "ingestion"
}