Emailed threat shuts down second-largest US school district

LOS ANGELES (AP) — The nation’s second-largest school district shut down all of its campuses Tuesday after an emailed threat targeted students at many Los Angeles-area schools.
The shooting in nearby San Bernardino that left 14 people dead this month influenced the decision to close all the schools in the Los Angeles Unified School District, which 640,000 students attend, Superintendent Ramon Cortines said.
New York City officials say they received the same threat, but quic