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This FBI file concerns the October 1, 2015 mass shooting at Umpqua Community College in Roseburg, Oregon, carried out by Christopher Sean Harper-Mercer. The Portland Division opened a full investigation the day of the attack and used preservation requests, online-account review, interviews, records requests, and a Major Case Contact Center to gather evidence and public tips. Released records include early electronic communications, interview and investigative reports, a request for Oregon State Medical Examiner records, and a tip concerning ammunition reportedly sold by Harper-Mercer before the shooting. The file shows that the FBI contact center received 367 calls before it was deactivated in December 2015, while many additional pages were withheld, referred, duplicated, or sealed.

FBI file number: 356A-PD-6706312 | Documents span: 2015-2016 | Released in 2 parts
Names in this file: Christopher Sean Harper-Mercer, Gregory T. Breitzing
Subjects: mass shooting, Umpqua Community College, Roseburg, FBI investigation, firearms ammunition, public tips