According to ABC News, Harvard University says four buildings on its campus outside Boston are being evacuated because of unconfirmed reports of explosives.

Three of those buildings being evacuated in Cambridge border Harvard Yard. The school tweeted that there have been no reports of any explosions.

Harvard says in a statement that its university police department received the unconfirmed report that explosives may have been placed in the four buildings and they were evacuated out of caution.