BERKELEY -- Police searched buildings at University of California, Berkeley after an anonymous bomb threat was received Tuesday afternoon.
Police searched more than one-third of campus buildings but had not found anything by 8 p.m., when the search was called off, authorities said.
The threat was sent from an anonymous email to the "Caltips" email address shortly before 1 p.m. Tuesday, campus authorities said.
No specific location of the purported bomb was given in the email. The sender claimed in the email that he or she had overhead a conversation indicating a threat, authorities said.
Campus administration alerted students and staff to the potential threat at 3:15 p.m.
Campus police conducted a similar building-to-building search after a bomb threat was called in Sept. 25, one of several such threats called into universities nationwide during the month of September.