PITTSBURGH (AP) — A founding member of a Scottish terror group was indicted on charges he emailed 17 bomb threats to the University of Pittsburgh earlier this year, disrupting campus life and forcing the evacuation of more than 100 buildings.

Adam Stuart Busby, 64, of Dublin, Ireland, was charged Wednesday with the 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.