Police sweep Lowell High for explosives

Students and staff were allowed back into Lowell High School in San Francisco Tuesday afternoon after police searched for a reported bomb, police and school district officials said.

The school at 1101 Eucalpytus Drive received a bomb threat in a phone call at about 1:15 p.m. and called police, according to San Francisco Unified School District officials.

Students and staff were evacuated and police arrived about five minutes later. Police officers searched the campus but did not find any threat, police said.

Students were allowed to reenter the school at about 4:20 p.m.