Firefighters respond to Harvard University Monday morning after reports of possible explosives on campus.br br University officials sent out an email to alert students and staff.br br SOUNDBITE: UNIDENTIFIED HARVARD STUDENT, SAYING: 10:08:40br br "Unconfirmed reports of explosives at four sites on campus... please evacuate those buildings now."br br Four buildings were evacuated just as final exams were getting underway for students.br br SOUNDBITE: UNIDENTIFIED HARVARD STUDENT, SAYING: 10:06:50br br "Everything was ready. We all had our stuff put away. We had our pencils out. They were about to start it, and right when they were about to say go, the fire alarm started and they evacuated everyone."br br SOUNDBITE: STUDENT HANNAH MCLAUGHLIN, SAYING: 10:19:37br br "I'm just completely shocked. I never expected this to happen to be completely honest. I mean, I was more worried about studying for my exams and I never expected this to happen.