Shooter left videos online, manifesto filled with with 'extremely violent thoughts'

Incident Overview - Shooting suspect identified as Robin Westman, 23 years old, who potentially left a manifesto [1] - The suspect is deceased, which impacts the investigation's direction [6] - Authorities believe the suspect acted alone and are not currently seeking other suspects [7] Suspect's Background & Motivation - Suspect left behind videos containing diaries and writings, some in an Eastern European language [2] - Writings and manifesto reveal suicidal and extremely violent thoughts [4] - Suspect expressed political views, including a reference to "kill Donald Trump," but views don't fit neatly into any category [5] Investigation & Legal Aspects - FBI is investigating the incident as a potential act of domestic terrorism and a hate crime [6] - Investigation will focus on whether anyone assisted the suspect [6] - The three weapons used (rifle, shotgun, and pistol) were reportedly purchased legally and recently [7]