A mysterious figure who used a rare narwhal tusk to help subdue a knife-wielding extremist on London Bridge last month has been identified as a civil servant in Britain's Justice Ministry.
Darryn Frost broke his silence on Saturday, telling Britain's Press Association that he and others reacted instinctively when Usman Khan started stabbing people at a prison rehabilitation program at Fishmongers' Hall next to the bridge on November 29.
Frost used the rare narwhal tusk that he grabbed from the wall to help subdue Khan even though the attacker claimed to be about to detonate a suicide vest, which turned out to be a fake device with no explosives. The intervention of Frost and others helped keep the death count to two. He said another man used a chair as a weapon in the desperate struggle.
"When we heard the noise from the floor below, a few of us rushed to the scene," the 38-year-old said.
Mr Frost used a rare narwhal tusk to help subdue the attacker. Source: Supplied
"I took a narwhal tusk from the wall and used it to defend myself and others from the attacker. Another man was holding the attacker at bay with a wooden chair."
He said Khan had two large knives, one in each hand, and pointed at his midriff.
"He turned and spoke to me, then indicated he had an explosive device around his waist," Frost said.
"At this point, the man next to me threw his chair at the attacker, who then started running towards him with knives raised above his head."
The confrontation quickly moved onto London Bridge, where Frost and others - including one man who sprayed Khan with a fire extinguisher - managed to fight the attacker to the ground until police arrived.
The extremist, who had served prison time for earlier terrorism offences, was shot dead by police moments later after he threatened again to detonate his vest.
There had been much speculation in the British media about the identity of the man who used the narwhal tusk in such a dangerous situation. Video of the event showed him helping to keep the attack from being much more lethal.
He was one of a handful of people who defied danger to help keep Khan from doing even more damage in the crowded hall and on the bridge.
Darryn Frost has been labelled a hero for his unconventional efforts in helping to subdue a knife-wielding extremist. Source: Facebook, Supplied
Frost said he was "eternally grateful" to the former prisoners and the members of the public who were taking part in the meeting and ran to help.
"Not only do I want to thank those who confronted the attacker, but also those who put themselves in danger to tend to the injured, relying on us to protect them while they cared for others," he said.
