After two months of bomb threats, students at the University of Pittsburgh are frustrated, scared and still supportive of how school officials and police are handling a very challenging investigation.
There were more threats Friday, after the pattern came full circle the night before with reports of a written threat in a stairwell at the Cathedral of Learning, a landmark 42-story building at the center of campus. That's how the first threats were delivered, but then in recent weeks they arrived via anonymous emails, bounced through a series of computer servers to mask the original sender.
Students say stopping someone who hand-writes threats is a huge challenge for campus security, since anyone with a pen could do it.
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Despites dozens of threats, no bombs have been found.