2 further arrests in London terror attack

A woman holds up a sign at a vigil for the victims of Wednesday's attack, at Trafalgar Square in London, Thursday, March 23, 2017. The Islamic State group has claimed responsibility for an attack by a man who plowed an SUV into pedestrians and then stabbed a police officer to death on the grounds of Britain's Parliament. Mayor Sadiq Khan called for Londoners to attend a candlelit vigil at Trafalgar Square on Thursday evening in solidarity with the victims and their families and to show that London remains united. (AP Photo/Matt Dunham) (The Associated Press)

People lay flowers as a tribute to the victims of Wednesday's attack outside the Houses of Parliament, after police cordon was removed in central London, Thursday March 23, 2017. Authorities on Thursday identified a 52-year-old Briton as the man who mowed down pedestrians and stabbed a policeman to death outside Parliament in London, saying he had a long criminal record and once was investigated for extremism — but was not currently on a terrorism watch list. (AP Photo/Matt Dunham) (The Associated Press)

Police officers patrol on Westminster Bridge in London, Friday March 24, 2017. On Thursday authorities identified a 52-year-old Briton as the man who mowed down pedestrians and stabbed a policeman to death outside Parliament in London, saying he had a long criminal record and once was investigated for extremism — but was not currently on a terrorism watch list. (AP Photo/Matt Dunham) (The Associated Press)

London's top anti-terror officer says two more "significant arrests" have been made in connection with the Westminster attack, in central and northern England. Nine people are currently in custody, while one has been released on bail.

Counter-terror chief Mark Rowley on Friday also identified the latest victim, who died in the hospital on Thursday, as 75-year-old Leslie Rhodes from Streatham, south London.

The attacker, identified as Khalid Masood, drove his car into crowds of people on Westminster Bridge on Wednesday afternoon, killing three and wounding some 50, before stabbing a police officer to death at the Houses of Parliament. He was shot dead by police.