LONDON — Police say a man may have stabbed multiple people at London Bridge in central London.
The police service told CNN it is dealing with a "dynamic situation."
Metropolitan police say they responded at about 1:58 p.m. to a reported stabbing.
"We believe a number of people have been injured," police said.
Images and video on social media shows emergency vehicles on the bridge, and onlookers including a BBC journalist reported hearing what sounded like gunshots at the scene.
Officers say they are aware of the reports circulating on social media and plan to release facts when they can.
London Ambulance Service said it had crews on the scene.
Police were called at 1:58pm to a stabbing at premises near to London Bridge.
Emergency services attended, including officers from the Met and @CityPolice.
A man has been detained by police. We believe a number of people have been injured. Further info to follow.
— Metropolitan Police (@metpoliceuk) November 29, 2019