#ISIS attack? 3 men stab pedestrians' after mowing down up to 20 people at #LondonBridge #BoroughMarket
London Bridge has been plunged into chaos amid reports of a vehicle mowing down pedestrians.
Armed cops are on the scene as bystanders report seeing people being stabbed and shots being fired.
The station has been evacuated and social media is awash with videos of people running away.
Three men with 12-inch hunting knives have reportedly stabbed pedestrians after mowing down up to 20 people with a white van on London Bridge.
Witnesses reported hearing 'rapid gunfire' amid reports that least seven people have been stabbed, leaving bodies 'strewn' on the road in central London. One of the casualties is reportedly a police officer.
Police are also responding to an incident at Borough Market, Scotland Yard said.
One witness said she saw three people with what appeared to be their throats cut on London Bridge amid the 'utter chaos'.
There are unconfirmed reports of gunfire on Southwark Street.