A bomb threat has prompted the evacuation of hundreds of children from a Southern California elementary school until police can make sure the campus is safe.

Glendale police Sgt. Tom Lorenz says an anonymous caller made the threat at 8:30 a.m. Monday, prompting officials at the R.D. White Elementary School to move about 880 children off campus to a supermarket parking lot about a block away.

Lorenz says police plan to search the school buildings to ensure there's no explosive device.

Parents are being allowed to pick up their children from the parking lot in the Los Angeles suburb.