In pictures: London Bridge attack

PA Police in London BridgePA
Police responded to reports of a van hitting several people on London Bridge.
Getty Images People at the scene of the London Bridge attackGetty Images
The surrounding area was quickly closed to the public.
PA Armed police officerPA
Armed officers were on the scene within minutes.
PA Armed police outside London Bridge pubPA
Eyewitness reports said the van mounted the pavement of the bridge.
H. Attai The white van, in the centre of this photo, is believed to have been used in the attack on London BridgeH. Attai
A white van is thought to have mounted the pavement, attackers are then thought to have descended on the busy Borough Market area.
Reuters People with their hands on their heads in Borough MarketReuters
Police locked down the Borough Market - known for its restaurants and bars - where several of the victims are thought to have been stabbed.
Gabriele Sciotto Man on ground at Borough MarketGabriele Sciotto
One social media user published a picture of a man on the ground with what appeared to be canisters strapped to his body. These explosive vests were later confirmed to be hoaxes.
PA People leaving the London Bridge area after an attackPA
Officers went into bars and told people to get on the floor while they secured the area.
Dominic Lipinski Armed policeDominic Lipinski
Police said seven people had been killed and three suspects shot dead.
PA Police officer speaks to members of the publicPA
Police told people to be "calm, alert and vigilant".
PA Ambulances on Borough High StreetPA
London Ambulance Service declared a major incident.
AFP/Getty Ambulances and police at London BridgeAFP/Getty
Some injured people were treated at the scene - 48 people, some critical, are being treated in five hospitals.
EPA Man standing outside London Bridge stationEPA
London Bridge station was closed shortly after the attack.
Reuters  Two people react to London Bridge attacksReuters
Facebook activated a safety check so people could let friends and family know they were safe.
AFP/Getty Emergency response helicopterAFP/Getty
An emergency response helicopter landed on London Bridge.
Getty Images Armed police officerGetty Images
Prime Minister Theresa May said it was being treated as a "potential act of terrorism".
Reuters Restaurant staff walking outside Borough Market after the attackReuters
The area remains closed as police and forensics experts conduct their investigations.