Man who used narwhal tusk to subdue extremist identified

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 ended his silence Saturday, telling Britain’s Press Association that he and others reacted instinctively when Usman Khan started stabbing people at a prison rehabilitation program at a hall next to the bridge on Nov. 29. SNIP “When we heard the noise from the floor below, a few of us rushed to the scene,” the 38-year-old said. “I took a narwhal tusk from the wall and used it…