Harvard Reopens Buildings After Bomb Scare An email tip apparently triggered evacuations By Kevin Spak, Newser Staff Posted Dec 16, 2013 9:02 AM CST Updated Dec 16, 2013 2:23 PM CST 5 comments Comments A police officer holds tape to keep people out from an area at Harvard University in Cambridge, Mass., Monday, Dec. 16, 2013. (AP Photo/Josh Reynolds) (Newser) – Harvard University has reopened four buildings on campus after evacuating them this morning due to a bomb scare, the Harvard Crimson reports. Sever Hall, Thayer Hall, and Emerson Hall were all cleared in time for afternoon exams, and Harvard Yard was reopened before 2pm. An email tip prompted the threat, reports the Boston Globe, but a Harvard police spokesman refused to confirm. No explosives have yet been found. The school posted alerts on its emergency page and its Twitter account, clarifying that there were no reports of actual explosions, and that the evacuations were ordered out of an "abundance of caution."