Fishmongers' Hall terrorist Usman Khan was shot at 20 times by armed police following his stabbing spree which killed two young people, an inquest has heard.
The 28-year-old from Stafford was initially shot twice at close range by a firearms officer on London Bridge after Khan shouted he had a bomb.
He was said to have been lying prone on the ground until he started to get up, just under 10 minutes later.
Khan was shouted at to lay still but he apparently yelled: "No, allahu akbar" (god is great) before rolling over and sitting up.
He was sat for 13 seconds during which at least nine fresh shots were fired at him, jurors at Khan's inquest in City of London's Guildhall heard.
In all, 20 shots were fired, as well as a Taser, by six officers, according to evidence given by Detective Chief Inspector Dan Brown, who led the investigation into the atrocity.
Khan had stopped moving by 2.12pm, about 15 minutes after he began his knife attack which resulted in the deaths of Cambridge University graduates Jack Merritt, 25, and Saskia Jones, 23, at a prisoner education event inside Fishmongers' Hall on 29 November 2019.
Last week, inquests into the murder of Mr Merritt and Ms Jones were concluded. Jurors found a catalogue of failures and omissions contributed to their deaths.
Khan's attack came 11 months after he was released from prison for plotting a jihadi training camp in Pakistan.
He had served eight years in prison when he was released into the community under licence.
He had met Mr Merritt through Learning Together, a Cambridge University-affiliated education programme for prisoners during his time in jail.
The inquest jury heard he travelled down to the event in London, unaccompanied, on the day of the attack and hid in a toilet cubicle.
He then emerged with two knives taped around his wrists, which both had the Arabic script for Allah etched into the blade, and proceeded to stab Mr Merritt, Ms Jones and three others who survived the ordeal.
Khan was chased out on to London Bridge by three guests from the Learning Together conference, one of them a former prisoner and another still serving his sentence.
Darryn Frost thrust a nawal tusk at Khan while John Crilly set off a fire extinguisher and Steve Gallant, who was unarmed, brought Khan to the floor.
The first "incident response car" with three firearms officers from City of London Police arrived at 2.02pm, six minutes after the attack had begun inside the hall.
It was then Khan made a bomb threat and armed police moved into position.
The inquest is due to last for two weeks