Officer tells court how taser failed to incapacitate knife attacker

Terrorist was pepper sprayed and tasered but still managed to stab officer.

Mohamud is restrained by officers in the aftermath of the attack

A BTP officer has told a court how he fired his taser but it failed to stop terrorist Mahdi Mohamud who lunged at him with a fillet knife before he could reload. Sergeant Lee Valentine, 31, said he felt "massively" lucky not to be...