PITTSBURGH (AP) — A founding member of a Scottish terror group was indicted Wednesday on charges he emailed bomb threats that disrupted campus life and forced the evacuation of more than 100 buildings on the University of Pittsburgh campus earlier this year.

Adam Stuart Busby, 64, of Dublin, Ireland, was charged Wednesday with 17 emailed threats sent to the school between April 6 and 21, and also with emailed bomb threats against federal courthouses in Pittsburgh, Erie and Johnstown in June. He’s also charged with threatening Pittsburgh-based U.S. Attorney David Hickton — who led the investigation that resulted in Busby’s indictment — in a June 20 email.