The attacker shot dead on London Bridgewas known to police and had connections to terror groups.
The man, who was wearing a fake suicide vest, killed two people and injured three in the attack.
He has not yet been named.
The attacker was a convicted terrorist with previous links to al-Muhajiroun, the group led by Anjem Choudry and dubbed Britain’s “most proliﬁc and dangerous extremist group”, The Independent understands.
Al-Muhajiroun was regenerating after a number of supporters were released from prison, this website reported in February.