The number of victims of the London terrorist attack on Wednesday has risen to four after a 75-year-old man died in hospital on Thursday.

The man whose identity is yet to be revealed had been on life support since the attack.

The three others killed have been identified as PC Keith Palmer, who was stabbed outside parliament; and Aysha Frade and Kurt Cochran, who died on Westminster bridge.

Four people remain in hospital in a serious condition, one with life-threatening injuries.

The attacker has since been identified as Khalid Masood. Initial investigation into him revealed that he was born in Kent on Christmas day 1964, and that this was not his birth name. He was born as Adrian Elms and converted to Islam.

He had a number of convictions – for assaults, grievous bodily harm, possession of offensive weapons and public order offences – spanning 20 years, and had spent time in jail, though not for terrorist-related offences.

Though Masood was previously known to MI5 as he was once investigated in relation to concerns about violent extremism, but was considered “a peripheral figure”, Prime Minister Theresa May said.

Eight people have been arrested since the attack. A 39-year-old woman, a 21-year-old woman and a 23-year-old man who were arrested at the same address, a 26-year-old woman and three men aged 28, 27 and 26. A 58-year-old man was also arrested.

Author: Yemi Olarinre