A gunman previously treated for PTSD at a residential treatment center took five hostages, released two, and fatally shot the remaining three employees after an eight-hour standoff. One victim had expelled him from the program two weeks earlier because he had knives and threatened to kill staff.
locked himself in a room with the remaining three victims for eight hours
APA
U.S. Secret Service National Threat Assessment Center. (2026). Preventing Targeted Workplace Violence: A U.S. Secret Service Guide to Behavioral Threat Assessment and Management (p. 23). Claim p023-10, NCIER Claim Map. https://www.ncier.org/research/claim-maps/workplace-violence-prevention/claims/p023-10
HTML
U.S. Secret Service National Threat Assessment Center. (2026). Preventing Targeted Workplace Violence: A U.S. Secret Service Guide to Behavioral Threat Assessment and Management (p. 23). Claim p023-10, NCIER Claim Map. <a href="https://www.ncier.org/research/claim-maps/workplace-violence-prevention/claims/p023-10">https://www.ncier.org/research/claim-maps/workplace-violence-prevention/claims/p023-10</a>Link to https://www.ncier.org/research/claim-maps/workplace-violence-prevention/claims/p023-10 from your own pages; it resolves to this claim and its highlighted source passage.
License: CC BY 4.0. Free to reuse with attribution: credit NCIER Claim Map and link to the claim.
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