The Islamic State group has claimed responsibility for an attack by a... (Associated Press) 
 
 LONDON (AP) — Khalid Masood, who attacked Britain's Parliament, killing four people and wounding some 50, was born Adrian Russell Ajao, London's top counterterror officer said Friday. The death toll from his assault on the capital rose to four on Thursday night when a 75-year-old man, named as Leslie Rhodes from Streatham, south London, had his life support withdrawn at King’s College hospital. The police said on Friday morning that two people remained in hospital in critical condition, with one of these considered to have “life-threatening” injuries, after Masood drove his car into pedestrians on Westminster Bridge before running into the parliamentary estate armed with two knives and fatally stabbing PC Keith Palmer before himself being shot dead. Rowley said two police officers targeted in the attack have significant injuries. We love him so much.” 
 
 As a mark of respect, Palmer’s shoulder number – 4157U – is to be retired and not reissued to any other officer, Scotland Yard said.
– Khalid Masood, the man responsible for the attack outside Britain's Parliament that killed four people and wounded 50, was born Adrian Russell Ajao, London's top counterterror officer said Friday. Mark Rowley revealed the name in a briefing outside Scotland Yard in which he also announced two more "significant" arrests had been made. That brings the total number of people in custody for the Wednesday attack to nine. "We remain keen to hear from anyone who knew Khalid Masood well, understands who his associates were, and can provide us with information about places he has recently visited," Rowley said, per the AP. Masood, 52, was born in southeast England and had most recently been living in Birmingham. ISIS issued a statement Thursday claiming responsibility for the attack and calling Masood a "soldier." Police say he had criminal convictions going back decades, the Guardian reports. "His first conviction was in November 1983 for criminal damage and his last conviction was in December 2003 for possession of a knife," police said in a statement. Rowley said two police officers targeted in the attack have significant injuries. Two other people also remain in critical condition. The latest victim, who died in the hospital on Thursday, was 75-year-old Leslie Rhodes from Streatham, south London. Police have also identified an injured woman who was pulled from the Thames after Masood drove into crowds on Westminster Bridge.