Second man held after sword attack at Buckingham Palace

A second man has been arrested over a suspected terror attack outside Buckingham Palace, during which police were attacked by a man armed with a sword.A 30-year-old man was apprehended by officers at an address in west London on Sunday morning, Scotland Yard said.During the attack on Friday night, a man was said to have driven at a police van outside the palace and, after he was confronted by unarmed officers, reached for a 1.2-metre (4ft) sword hidden in the passenger-side footwell of his car.