Eldo Kim, 20, allegedly confessed to the FBI he sent email messages saying "shrapnel bombs" had been placed in four buildings because he wanted to avoid taking a final exam, the Boston Globe reported. One of the buildings named in the messages sent Monday morning was Emerson Hall, where his exam was scheduled for 9 a.m.
Kim was scheduled to appear before a federal magistrate Wednesday. He could face a significant prison sentence if he is convicted.
FBI Agent Thomas Dalton said in an affidavit Kim sent the messages to university administrators, campus police and the student newspaper just before he was to leave for the exam. He then left for Emerson Hall.
"According to Kim, upon hearing the alarm, he knew that his plan had worked," Dalton said.
Kim used a temporary IP address and email but because he used the wireless network of the university in Cambridge, Mass., investigators had identified him as a suspect by late Monday, the FBI said.
For several hours Monday, four buildings -- the Science Center, and Thayer, Sever and Emerson halls -- were evacuated and searched.