Harvard University was partially evacuated Monday morning after school officials sent out an alert about explosives on campus.

"Unconfirmed reports of explosives at four sites on campus: Science Center, Thayer, Sever, and Emerson," said the campus alert sent at 9:02 a.m. "Please evacuate those buildings now."

Officials at the Cambridge, Mass., school said there had been no reports of explosions. Campus and Cambridge police were investigating the reports.

The evacuated buildings were diverse. For example, Thayer Hall is a freshman dorm, while Emerson Hall houses the school's department of philosophy.

It is finals week for many classes at Harvard, according to the university's exam schedule.

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