Police arrest two more over British parliament attack

Rowley also revealed that two "significant arrests" have been made overnight in the West Midlands and northwest and nine people have been taken into custody.

He also specified that the police have been focusing on understanding Masood's reasons to carry out the attack, his preparation and his associates. Police also said they seized more than 2,700 items, which includes "massive amounts of computer data".

A total of 31 people of 12 nationalities have been treated in hospital, two people remain in critical condition while two officers have very significant injuries. The 75-year-old who died in hospital on Thursday night was Leslie Rhodes, a man from Streatham in south London. "They came and arrested three men", a witness who works in a shop nearby told the Press Association.

Masood was shot dead by an armed police officer outside Parliament. The woman, who has not been named, is being held under the Police and Criminal Evidence (PACE) act.

Masood, 52, was born in Kent to the southeast of London and moved through several addresses in England, although he was known to have lived recently in Birmingham in central England.

Police said the suspect drove his vehicle into crowds of people on Westminster Bridge on Wednesday afternoon, killing three and wounding some 50, before stabbing police officer Keith Palmer to death at the Houses of Parliament. His most recent conviction was in 2003 for possession of a knife.

It was over in 82 seconds, but left a trail of death and destruction in one of the most picturesque parts of London that has always been the heart of Britain's democracy - but Scotland Yard says it may never know why UK-born Khalid Masood did it. The chances of figuring out Masood's are now slim, according to Basu.

On Thursday, ISIS, the Islamic State in Iraq and Syria, claimed responsibility for Masood's attack, although it was unclear what links - if any - he had with the militant group.

The police have not linked Masood to a terrorist organisation.

The attack was the first mass-casualty terrorist outrage in Britain since 2005 when 52 people died in the July 7 bomb attacks on the London public transportation system. "I think we'll hear more from them in due course, but we have to remember that this man was known to them partially because he had been in jail, but not for terrorist offences", she said.

Armed officers patrolling London have almost doubled since the attack, Rowley added.

  • Leroy Wright