All Los Angeles Unified schools closed by ‘credible threat’ of violence
All Los Angeles Unified schools closed by ‘credible threat’ of violence. ficials closed all Los Angeles Unified School District campuses Tuesday morning after receiving a “credible threat” of violence involving backpacks and packages left at campuses. Authorities said they plan a search operation of all of the LAUSD’s more than 900 schools. The nation’s second-largest school district has more than 700,000 students. http://www.latimes.com/local/lanow/la…