Los Angeles shuts public schools over 'credible' threat

The city of Los Angeles shut down all public schools on Tuesday after receiving a "credible" electronic threat targeting the country's second-largest education district and its 640,000 students. Ramon Cortines, the superintendent of Los Angeles schools, said the extraordinary measure was ordered as a precaution, triggered in part by the December 2 attacks in nearby San Bernardino.
He told a news conference that police alerted him to a threat involving backpacks and "other packages," "made not to one school, two schools or three schools. It was many schools." A school official quoted by CNN said the threat, emailed from Germany to a school board member, was deemed credible. In New York, however, officials said a similar threat to schools had been received and was being treated as a hoax.
"There is no credible threat to our children. We are convinced that our schools are safe," Mayor Bill de Blasio told a press conference, adding that the threat was "so generic and outlandish" that it could not be taken seriously. "The immediate assessment by the intelligence division, and again, in consultation with the FBI, is that there was nothing credible about the threat," he said. In Los Angeles, police and FBI agents were called in to help search the more than 1,000 schools in the district, Cortines said, adding that he expected the operation to be completed by the end of the day.
Addressing a news conference, New York Police commissioner Bill Bratton suggested Los Angeles school officials had been over-cautious in deciding the shutdown. "We cannot allow ourselves to raise levels of fear," Bratton said. "Certainly levels of awareness, but it is not a credible threat and not one that requires any action on our part similar to what my understanding is the school system in Los Angeles took." The chief of the Los Angeles school police department, Steven Zipperman, stressed the decision was an extreme precautionary measure.
"Earlier this morning we did receive an electronic threat that mentions the safety of our schools," he told reporters. "In an abundance of caution, as the superintendent has indicated, we have chosen to close our schools today until we can be absolutely sure that our campuses are safe." Zipperman said private schools in the district had remained open since the threat was only directed at the LAUSD. The news conference was held shortly after 7 am local time, before the start of the school day for most children.