BREAKING NEWS: HARVARD EVACUATED Updated 2:44pm EST

2:44pm EST

Science Center cleared. Students, faculty, and staff should enter through Science Plaza doors. All four sites now open.

1:48pm EST

Harvard Alert-Sever Hall and Harvard Yard are cleared and students may return. Science Center still closed. Updates to be posted here.

HARVARD UPDATE 1:16pm EST
Thayer and Emerson Hall are cleared and students may return. Sever and Science Center are still closed.

HARVARD UPDATE 11:48am EST
Report of bombs on campus remains unconfirmed.

UPDATED:From Harvard University
10:40am EST

As you learned from the MessageMe alerts this morning, the Harvard University Police Department (HUPD) received an unconfirmed report that explosives may have been placed in four buildings on campus: the Science Center, and Thayer, Sever and Emerson halls. Out of an abundance of caution, the buildings have been evacuated while the report is investigated by the HUPD and the Cambridge Police Department.

Access to Harvard Yard has been restricted to residents of the Yard with Harvard ID. As of the writing of this message the report remains unconfirmed and the HUPD has no reason to believe there is a threat to any other site on campus.

Harvard's focus is on the safety of our students, faculty and staff. We will continue to update the community via MessageME and through messages posted here and on the University's Twitter and Facebook accounts.

9:33am EST

The Harvard University Police Department (HUPD) this morning received an unconfirmed report that explosives may have been placed in four buildings on campus:  the Science Center, Thayer, Sever and Emerson Halls. HUPD and Cambridge Police are on the scene. Out of an abundance of caution, the buildings have been evacuated while the report is investigated.  Harvard's focus is on the safety of our students, faculty and staff.  We will update the media when we have more information.

9:13am EST

Harvard Alert-HUPD and CPD are on the scene and investigating. Please stand by for more info.

9:02am EST

Unconfirmed reports of explosives at four sites on campus: Science Center, Thayer, Sever, and Emerson. Please evacuate those buildings now.
 http://www.harvard.edu

We are following breaking news happening at the Harvard Campus in Cambridge, Massachusetts involving a bomb with possible explosive at 4 buildings.

Police and Fire are on scene.

People have evacuated from Science Center, Thayer, Sever, and Emerson.

We are following breaking news happening at the Harvard Campus in Cambridge, Massachusetts involving a bomb threat with possible explosive at 4 buildings.

Police and Fire are on scene.

People have evacuated from Science Center, Thayer, Sever, and Emerson.

We will bring you the latest as it becomes available....