All Los Angeles schools closed over 'credible threat' of terror attack

@LASchools closed today regarding unspecified threat. #LASD #LAPD and #LASPD Investigating.

- LA County Sheriff's (@LASDHQ) December 15, 2015

UPDATE, 1034am PT: NYPD commissioner Bill Bratton says NYC got the same threats as LAUSD did, and determined it to be a hoax. Bratton says LA authorities are massively overreacting. LAPD Chief Charlie Beck disagrees.

Wouldn't be a Tuesday in America without an incident of mass violence or a threat of one.

"Officials closed all Los Angeles Unified School District campuses Tuesday morning after receiving a 'credible threat' of violence involving backpacks and packages left at campuses," the Los Angeles Times was among the first to report today. LAUSD is America's second-largest school district, with more than 700,000 students.

(more")