The Harvard University Twitter account reports this morning that police are on the scene after unconfirmed reports of possible explosives at four sites on campus: Science Center, Thayer, Sever, and Emerson. Evacuations are underway.

Twitchy will update as news develops.

FYI: It’s finals week.

https://twitter.com/emilyc_jones/status/412596965013467136

https://twitter.com/NYNewsgirl/status/412595549645582336

Zing:

Update:

Harvard cancels finals due to bomb threat; Students applaud [pics]

Update:

CNN is reporting all clear.

Update: President Obama has been briefed.

It is now being reported that an all clear has not yet been given:

Update II: The “all clear” has been issued.