On Monday in the afternoon, a residence hall and three buildings were evacuated at Harvard University, the Ivy League school in Boston, Mass., according to The Washington Post.

The university made an announcement shortly before 1 p.m.

"As most of you are now aware, we received an unconfirmed bomb threat affecting the Science Center, as well as Sever, Emerson and Thayer Halls on the Cambridge campus. The buildings have been evacuated and law enforcement officials are on scene. Entry to the Yard is restricted. We will provide updates as soon as we have additional information," the university said in a statement.

The evacuation took place due to a bomb threat received to the campus via email. By 6 p.m. the four buildings were reopened and the threats were deemed not credible, a spokesperson for the Cambridge Police Department explained.

"Nothing to substantiate the emailed threat has been found and the investigation regarding the source is ongoing," the university posted via the school website following updated intelligence.

"The safety and security of members of the Harvard community is always our top priority," Harvard Executive Vice President Katie Lapp said while making a statement , according to Boston News.

"In the wake of recent tragic events in locations ranging from Paris to Beirut and beyond, we understand that this type of threat will cause great anxiety for many across our campuses. We will continue to be vigilant as we carry on Harvard's mission of expanding and disseminating knowledge," she continued.

Harvard was not the only school in Boston that received bomb threats on Monday. Cambridge P.D. said it received intelligence that someone planned on bombing "Cambridge, Mass. city schools."