The bomb scare at Harvard University Monday was triggered by an e-mail warning that explosives had been planted in four buildings at the heart of the storied campus, according to a law enforcement official.
At 2:44 p.m., the university announced that the Science Center, the last of the four buildings, had been deemed safe. Law enforcement officials had already combed through and cleared Thayer Hall, a freshman dorm, and Sever and Emerson halls, two buildings that contain lecture halls.
Thayer, Emerson, and Sever are all located inside the ancient Harvard Yard section of the campus. The Science Center stands just outside the Yard.
According to the school’s academic calendar, final exams are scheduled for this week for undergraduates.