A man has been taken to hospital after being shot by police in south-east London.
Firearms officers responded to multiple 999 reports of a man with a firearm in Creek Road, Greenwich, at about 14:30 BST. The man's injuries are not life threatening, police said.
An eyewitness described seeing a man with an item that "looked like a semi-automatic 9mm or Glock-style gun".
There is no ongoing threat to the wider public, the Met Police said.
Eyewitness Clare Thomas told the BBC she was in a car stuck in traffic when she saw a man with what looked like a handgun.
Ms Thomas said: "He had duct tape around his hand and the gun was in his left hand. It looked like a semi-automatic 9mm or Glock-style gun.
"I'd say he was in his 30s to 40s. He was wearing a red top."
Gemma Daly, 31, said she heard some shouting and then "a big bang" she believed was a gunshot.
'Removed his clothing'
"Police were attending to a man on the side of the bridge," she said, adding that he was "clearly injured".
"They removed his clothing", she said, and described how "a lot of people" were working on the man before he was put on a stretcher.
The Independent Office for Police Conduct (IOPC) said it had started an investigation into the shooting.
"Our investigators have been sent to the scene and the post-incident procedures to start gathering evidence," an IOPC spokesman added.
Transport for London said a number of bus routes had been diverted while the road was cordoned off.