Two members of the public have died after an attack on London Bridge in which police also shot dead a man, the BBC reports.
The Met Police has declared the attack a terrorist incident.
The suspect, who died at the scene, was believed to have been wearing a hoax explosive device, police said.
Videos on social media appear to show a group of passers-by holding down a man on the bridge. A firearms officer arrives, seems to indicate to the group to get clear, and fires a shot.
Details are still emerging and Neil Basu, the head of UK counter-terrorism policing, said the force was keeping an open mind over the motive.
He said officers were called to a stabbing at a premises near the bridge just before 14:00.
