{
  "id": "2019-03-16-university-of-michigan-mason-hall-active-shooter-all-clear",
  "slug": "university-of-michigan-mason-hall-active-shooter-all-clear-2019-03-16",
  "institution": {
    "name": "University of Michigan",
    "shortName": "U-M",
    "state": "MI",
    "type": "public-r1",
    "alertSystemName": "DPSS / U-M Emergency Alert",
    "enrollment": 51000
  },
  "incident": {
    "date": "2019-03-16",
    "type": "swatting",
    "cleryCategory": "emergency-notification",
    "resolution": "confirmed-hoax",
    "headline": "All clear after Mason Hall unconfirmed active shooter report",
    "headlinePublic": "All clear after Mason Hall unconfirmed active shooter report",
    "summary": "University of Michigan DPSS [published this notice](https://news.dpss.umich.edu/2019/03/1182). Full text is preserved from the official DPSS news page.",
    "outcome": "See official DPSS notice for investigation status and community guidance."
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "all-clear",
      "channel": "multi-channel",
      "verbatimText": "All Clear - 7:50 p.m. - Police have determined there is no threat to the community. Buildings are open. All clear.\n\nUpdate 3 - 6:35 p.m. -  There continues to be no indication of an active threat to the community. Police continue to investigate. Please stay away from Angell and Mason Halls.\n\nUpdate 2 - 5:32 p.m. - There does not appear to be an active threat to the community. DPSS continues to investigate. Continue to stay clear of area.\n\nUpdate 1 - 5:17 p.m. - Unconfirmed reports of an active shooter, officers are in the area checking. Stay away from the area of Mason Hall.\n\nOriginal - 4:40 p.m. -  UM EAlert Ann Arbor: Active shooter in Mason Hall. Run, hide, fight. www.dpss.umich.edu.\n\nFor more information about this event visit: https://publicaffairs.vpcomm.umich.edu/unfounded-reports-of-shots-fired/",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://news.dpss.umich.edu/2019/03/1182",
      "sourceDescription": "U-M DPSS news / emergency alert page",
      "annotations": [
        "Transcribed from official news.dpss.umich.edu post HTML."
      ],
      "characterCount": 814,
      "confidence": "high",
      "timestampApprox": "DPSS notice dated 2019-03-16"
    }
  ],
  "context": "University of Michigan DPSS news.dpss.umich.edu official notice archive.",
  "keyFindings": [
    "Official DPSS notice provides full transmitted alert or security bulletin text."
  ],
  "sources": [
    {
      "type": "official-archive",
      "title": "UM EMERGENCY ALERT – ALL CLEAR",
      "url": "https://news.dpss.umich.edu/2019/03/1182",
      "accessDate": "2026-07-25"
    }
  ],
  "confidence": "high",
  "tags": [
    "michigan",
    "dpss",
    "swatting",
    "emergency-alert"
  ],
  "dateAdded": "2026-07-25",
  "lastUpdated": "2026-07-25",
  "addedBy": "ingestion"
}