Officials say Los Angeles Air Force Base was locked down for nearly five hours after a man was reported on the grounds with ammunition and wires sticking out of a backpack.

The base said in a statement Tuesday night that after a building-to-building search the reports of a threat were found baseless and the base and surrounding streets were reopened.

Susan James, who works in public affairs on the small base near Los Angeles International Airport, said Tuesday that employees were told about 1:45 p.m. to go to a secure area of their office and remain there.

El Segundo police Capt. Brian Evanski told the Daily Breeze newspaper the report said a man was on the base wearing camouflage attire with a backpack or vest showing wires and ammunition.