Student held over threat to 'shoot up' school
Police in Los Angeles say a student who threatened to open fire at his school, two days after the Florida high school shooting, had an arsenal of weapons at his home.

Police in Los Angeles say a student who threatened to open fire at his school, two days after the Florida high school shooting, had an arsenal of weapons at his home.
The Chancellor has been challenged over his vow to crack down on single-use plastics - three months after addressing the issue in his Budget.
A ferry has been struck by an explosion in Mexico, leaving 18 people injured.
A ferry has been struck by an explosion in Mexico, reportedly injuring around a dozen people who were on board.
Bournemouth's beach has been crowned Britain's best beach in this year's TripAdvisor Travellers' Choice Awards.
More than 600 of KFC's nearly 900 outlets are now open following days of chicken shortages across the country due to a new delivery contract.
Tom Jeffries, one of five Britons arrested for "pornographic dancing" in Cambodia, tells Sky News how he vomited from panic when police raided their party and handcuffed the group.
The who's who of the Syrian civil war is fiendishly complicated.
Here's 10 athletes whose Winter Olympic dreams were shattered on the slopes and on the ice rink.
Jennifer Lawrence has criticised online furore over a revealing dress she wore at an outdoor London photo call, describing it as "utterly ridiculous".
US evangelist Reverend Billy Graham has died at his home in North Carolina at the age of 99, a spokesman has said.
A blast of cold weather heading in from the east could see the UK plunged into negative double figures next week - delaying the prospect of spring warmth.
Archaeologists have long wondered how the ancient Egyptians aligned the corners of the pyramids of Giza along the cardinal points so accurately.
The Prime Minister has ordered a review of public health scandals involving the pregnancy test drug Primodos, the use of vaginal mesh implants and the anti-epilepsy drug sodium valproate.
A survivor of the Florida shooting has denied he is a "crisis actor" after Donald Trump Jr appeared to endorse an article which labelled the student a "Trump-hater".
Jeremy Corbyn has demanded an apology and a donation to charity from a Conservative MP who claimed the Labour leader sold British secrets to "communist spies".
Amnesty International says "flagrant war crimes" are being committed in eastern Ghouta, despite it being in a "de-escalation zone".
Murder investigations have been launched after two young men were stabbed to death less than a mile apart during a night of violence in northwest London.
Several A-list celebrities have joined George and Amal Clooney in pledging $500,000 to the March For Our Lives movement.
The UK's unemployment rate has unexpectedly risen by the biggest amount in almost five years, official figures show.
Scotland Yard did fail two victims in its flawed investigation into black cab rapist John Worboys, the Supreme Court has ruled.
The United Nations has called for an end to the "hell on earth" violence in Syria after hundreds of civilians were killed in eastern Ghouta.
Syrians in eastern Ghouta say they are waiting their "turn to die" as ferocious attacks by the country's regime continued for a fourth day.
At least 250 people have been killed over two days of escalating violence in eastern Ghouta as Syrian and Russian airstrikes continue to bombard the rebel-held enclave.
Police have closed part of the M20 after an "unexplained" death on the London-bound carriageway near Ashford.