A man was shot dead by armed police in Streatham, south London, on Sunday afternoon.
Police described the incident as “terrorist-related” and said that a number of people had been stabbed.
At least three people were injured and taken to hospital. One is believed to be in a serious condition.
The attacker is thought to have been wearing a fake suicide vest made of objects designed to look like an improvised explosive device.
The attacker is believed by police to have been motivated by an Islamist terrorist ideology.
Plain-clothes surveillance officers appear to have been in the area.
An investigation will be carried out by the Independent Office for Police Conduct (IOPC), as is required by law when police use lethal force.
