officials rush to slow the growing coronavirus. and they came. they saw, they stayed. how these slippery sea lions became a san francisco treat. announcer: this is the cbs overnight news. welcome to the overnight news. i m omar villafranca. investigators in london are looking at possible terrorist links to the man who went on a stabbing spree on a busy street. police say the attacker was wearing a fake bomb. he was shot and killed by officers. three people were injured. roxana saberi starts us off tonight from the london suburb of streatham. reporter: this video posted on social media showed the moments right after the attacker was shot dead by police. go to the back of the store! reporter: an armed plainclothes officer orders onlookers to take shelter in a shop. police say the attacker was under surveillance when he stabbed two people on this busy road and a third was injured by flying glass caused by the gunshots. they say a hoax explosive device was strap