British police say the death toll has been revised down to four following the Westminster terror attack in London.
Counter-terrorism chief Mark Rowley said three civilians and the attacker died in and about 40 people were injured in Wednesday's attack.
The victims were a policeman who was stabbed and two members of the public, a woman in her mid-40s and a man in his mid-50s.
He identified the police officer who died as Keith Palmer, 48, a husband and father.
Rowley said 29 people were being treated in hospital, seven of whom were in a critical condition. Police had said late on Wednesday that the death toll was five.
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He said there was a mix of nationalities among the dead but gave no details.
Police believe they know the identity of the attacker but have not named him.
The attack on Wednesday started when the assailant sped across Westminster Bridge in a car, ramming pedestrians along the way. He then ran towards parliament and stabbed the policeman before he was shot.
Rowley told reporters on Thursday: "Greater clarity is now developing regarding the casualty figures as we have now collated information from the public and five hospitals - the latest figures I have are that there are currently four dead and 29 people were treated in hospital.
"We are still collating numbers of walking wounded and of those in hospital sadly seven of them are in a critical condition.
"Tragically the deaths included PC Keith Palmer who was protecting parliament, and two members of the public - a woman aged in her mid 40s and a man aged in his mid 50s."
