80 minutes to establish "a credible threat"

Public Safety notified members of the campus community about the possibility of an armed man on campus only after interviewing several people and establishing a "credible threat," University spokesperson Cass Cliatt '96 said in an interview earlier tonight.

Cliatt added that Public Safety receives calls about potential safety threats "on a not infrequent basis" but declined to estimate how many times a month such incidents occur. "We receive calls from people who things they see things -- bombs, toy guns -- it happens from time to time," Cliatt said.

Executive Vice President Mark Burstein said in an interview at 2:30 a.m. that administration officials were "extremely satisfied with our response in this situation."