As Twitchy reported, there are unconfirmed reports of explosives at four sites at the Harvard campus. Students report from the scene:

That’s right. Final exams were scheduled today.

Harvard’s newspaper has more:

Hmm.

https://twitter.com/MyCigarGirl/status/412594829294841856

Twitter users suspect the bomb threat is a finals hoax.

https://twitter.com/MichaelMartinez/status/412600757586632704

Twitchy will update as soon as more information is known. In the meantime, we hope all on campus remain safe.

Update:

CNN is reporting all clear.

Hoax?

Update: President Obama has been briefed.

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

Update:

The “all clear” has been issued:

Related:

Unconfirmed reports: Harvard University tweets about possible bombs on campus