{
  "id": "2018-04-01-university-of-michigan-mason-hall-graffiti",
  "slug": "university-of-michigan-mason-hall-graffiti-2018-04-01",
  "institution": {
    "name": "University of Michigan",
    "shortName": "Michigan",
    "state": "MI",
    "type": "public-r1",
    "alertSystemName": "U-M DPSS / Emergency Alert",
    "enrollment": 51000
  },
  "incident": {
    "date": "2018-04-01",
    "type": "active-threat",
    "cleryCategory": "timely-warning",
    "resolution": "under-investigation",
    "headline": "Mason Hall Graffiti campus safety notice",
    "headlinePublic": "Mason Hall Graffiti campus safety notice",
    "summary": "University of Michigan DPSS [published a public safety notice](https://news.dpss.umich.edu/2018/04/505) on or about 2018-04-01. Full text is preserved from the official news.dpss.umich.edu archive.",
    "outcome": "See official notice for investigation or operational status.",
    "casualties": {
      "killed": 0,
      "injured": 0
    }
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "initial",
      "timestampApprox": "Published on or about 2018-04-01 on the official public safety archive",
      "channel": "email",
      "verbatimText": "Mason Hall Graffiti\n\nThursday, 12 April 2018, 16:52\n\n\t\r\n The University of Michigan Division of Public Safety and Security has been notified by students and staff about a graffiti message, \"School Shooting 4/13,\" written on a bathroom stall in Mason Hall. We've included an image of the graffiti, which has since been removed from the wall.\n\nThe safety and security of our community is our highest priority. Out of an abundance of caution, the U-M Police Department is continuing to assess the situation and is conducting a thorough investigation. We have notified local, state and federal law enforcement partners and have increased police presence on campus.\n\nWe value our partnership with our community and appreciate those who stepped forward to report this information. We all play a role in ensuring community safety. If you see something that shouldn't be there or someone's behavior doesn't seem quite right – say something.\n\nIf you have any information regarding this incident, please contact DPSS at 734-763-1131 or at dpss-safety-security@umich.edu.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://news.dpss.umich.edu/2018/04/505",
      "sourceDescription": "University of Michigan public safety notice",
      "annotations": [
        "Transcribed from official public safety web archive page body.",
        "Full public notice text recovered for confirmed-verbatim preservation."
      ],
      "characterCount": 1066,
      "confidence": "high"
    }
  ],
  "context": "Official public safety archive notice from University of Michigan.",
  "keyFindings": [
    "Official archive page preserves complete public safety notice text."
  ],
  "sources": [
    {
      "type": "official-archive",
      "title": "Mason Hall Graffiti",
      "url": "https://news.dpss.umich.edu/2018/04/505",
      "accessDate": "2026-07-25"
    }
  ],
  "confidence": "high",
  "tags": [
    "michigan",
    "umich",
    "dpss",
    "active-threat",
    "timely-warning"
  ],
  "dateAdded": "2026-07-25",
  "lastUpdated": "2026-07-25",
  "addedBy": "ingestion"
}