Harvard Final Exam-Timed Bomb Scare a Fake, President Obama Briefed on Events

Don't panic

The evacuation at Harvard University this morning was triggered by an e-mail that warned explosives had been planted in four buildings at the heart of the storied campus, according to a law enforcement official.

At 10:40 a.m., authorities reported that no explosive devices had been found in the Sever, Emerson, and Thayer halls, as well as the Science Center, although they stressed that the search was continuing by police from at least five different agencies assisted by bomb-sniffing dogs.