HUPD Chief Francis D. "Bud" Riley said Leong, the suspect, struggled when officers tried to arrest him and was subdued using mace.

After the arrest, CPD bomb technicians examined the man's satchel, which had been left in the Science Center. They determined that it was not an explosive and removed it as well.

Outside, Mitten talked with students as news helicopters hovered overhead.

"I'm just glad everyone's okay. I want to thank you all for acting with cool heads," he said. He added jokingly, "This is an insult to Alexander!"

Around 11:30 a.m., HUPD reopened the building to allow students to retrieve belongings they had left behind. Under the watchful eye of a half-a-dozen HUPD and CPD officers, students filed into Science Center B and retrieved their coats and bags. HUPD also allowed students, faculty and staff back into the other areas of the building to retrieve belongings.

Afterwards, Mitten took all the teaching fellows involved out to lunch at the Faculty Club to collect themselves and calm down. Mitten praised his students' conduct.

"They were all heroes," he said. "They all really kept their heads and acted with real presence of mind."

Dean of the College Harry R. Lewis '68 happened to be in the Faculty Club at the time and picked up the tab for Mitten's lunch.