Officials have closed all Los Angeles Unified School District campuses Tuesday morning after a bomb threat was called in to board member, roiling the nation's second-largest school district.
The move comes less than two weeks after two shooters killed 14 people in San Bernardino in what was the deadliest terrorist attack on U.S. soil since 9/11.
It is unclear when the threat was made and to which school board member, but the situation prompted the LAUSD to close all schools effective immediately, according to the Los Angeles school police.