London Bridge attacker tackled with narwhal tusk and fire extinguisher

Three members of the public, including one armed with a fire extinguisher and another with a five-foot narwhal tusk, grappled with and eventually grounded the London Bridge knife attacker before police arrived.
Footage has emerged showing the men surrounding the attacker, who is eventually pinned to the floor. One man sprays him with a fire extinguisher before trying to hit him with it, while another approaches him with a narwhal tusk, lunging at him with it. It is believed the item was pulled from the wall of Fishmongers’ Hall