Federal authorities said Wednesday that investigators had made "significant progress" in their probe of a series of bomb threats at the University of Pittsburgh.
The statement by U.S. Attorney David J. Hickton gave no details about the suspects, the progress of the investigation, or what information had helped. The statement came hours after early-morning bomb threats evacuated students from five Pitt dormitories. A bomb threat also was made Tuesday night against the home of Pitt chancellor Mark Nordenberg. - Pittsburgh Post-Gazette