A police operation in north London during which a woman was shot, foiled an active terror plot, Scotland Yard has said.
Armed officers raided a property in the Willesden area shortly after 7pm on Thursday evening and a woman in her 20s was shot by police.
Six people were arrested during the operation and police said the woman remained in a serious but stable condition in hospital.
Deputy Assistant Commissioner, Neil Basu, who is the senior national coordinator for Counter Terror Policing said the operation had foiled an "active plot" and he paid tribute to the officers involved.
It is understood the police had been watching the property as part of an ongoing counter-terrorism operation, but decided to go in after receiving specific intelligence.
The raid took place at a Victorian property on Harlesden Road and locals reported hearing a number of shots as heavily armed officers from the Met's Counter Terror Specialist Firearms command stormed the house.
Harlesden Rd still cordoned off by the police, forensic vans just left the area. Residents allowed in under police escort. pic.twitter.com/MngBSrf5j8— Jakub Krupa (@JakubKrupa) April 27, 2017
The operation took place just a few hours after a man was arrested in Westminster on suspicion of terrorism offences after being stopped close to Downing Street carrying a rucksack packed with knives.
But Scotland Yard said the two matters were unrelated.
Mr Basu said: "Our highly trained firearms officers carried out a specialist entry into an address in Harlesden Road that we had under observation as part of a current Counter Terrorism investigation.
"An armed entry was necessary due to the nature of the intelligence that we were dealing with, and involved armed officers firing CS into the address.
"During the course of that operation one of the subjects of that operation - a woman - was shot by police - she remains in hospital.
"Her condition is serious but stable. Because of her condition she has not yet been arrested. We are monitoring her condition closely."
He added: "In total six people have now been arrested in connection with that investigation - five at or near the address and one in Kent.
"The two further arrests were made when a man and a woman - both aged 28 - returned to the address later last night.
"Searches are ongoing at three London addresses - including Harlesden Road - as part of this investigation.
"Due to these arrests that we have made, I believe that we have contained the threats that they posed."
Locals described how they saw heavily armed officers wearing bulletproof vests stormed the address just after 7pm.
They said the house was occupied by a family of three who were occasionally visited by a an older woman in her 40s.
Neighbours said the injured woman was brought out of the house on a stretcher, wearing a burkha.
One said she shouted "don't touch my body" as paramedics tried to tend to her wounds.
Ruth Haile, 40, who has lived in the area for nine years and who witnessed the raid said: "I heard a shot and I looked out my window and there were dozens of police.
"The woman was being arrested, she was on the floor wearing an long dress and covered in a head scarf. She was shouting, 'Do not touch me, do not touch my body.'
"She was injured, she had a wound on her right side and doctors were trying to help her. There was a bandage on the wound. She was lying in the street and there were about five or six police around her, some of them were carrying guns."
Another neighbour said: "It's so scary, I don't know the family but I heard the gunshots. I never expected something like this."
Police said six people had been arrested including a 16-year-old boy and a 20-year-old woman who were detained at the address.
A 20-year-old man was arrested near to the address and a 43-year-old woman was arrested in Kent a short while later.
Two further people, a man and woman both aged 28, were arrested when they returned to the address last night.
All four have been arrested on suspicion of the commission, preparation and instigation of terrorist acts under section 41 of the terrorism act 2000.
The Independent Police Complaints Commission has been informed of the incident, as is routine for police shootings.