A Bomb threat interrupted classes at the Colegio San Juan de Letran in Intramuros, Manila on Monday, after an unidentified caller told a student assistant around 11:33 a.m. about an alleged bomb. Jhenie Villar, director of public affairs, said they relayed the information to the crisis management team of Letran that immediately secured the area and called 911. The students were then told to vacate the school premises. A search of the campus by an Explosives Odinance Unit proved negative. Classes resumed at 2:30 p.m. Police Supt. Albert Barot said they were investigating the incident but failed to trace the caller.