Event Brief
21-year-old Pennsylvania man arrested over alleged ISIS plot
By The BriefBrief · Sources (3)
Filed: Sep 15, 2026 at 9:00 AM ET
UPDATED Sep 15, 2026 at 10:00 PM ET
Summary: Federal officials say a 21-year-old man from Pennsylvania was arrested for allegedly plotting what could have been a mass casualty attack inspired by ISIS. The case centers on the alleged “mass casualty attack” plan described by officials.
WHO: Federal officials
WHAT: Arrest of a 21-year-old Pennsylvania man over an alleged ISIS-inspired “mass casualty attack” plot
WHEN: Sep 15, 2026 at 9:34 PM ET
WHERE: Pennsylvania, USA
WHY: Motive not yet established.
How this story developed (showing 3 of 3 earlier reports)
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