London attacker took steroids before deadly rampage, inquest told

The man who mowed down pedestrians on London's Westminster Bridge before killing a police officer outside Britain's parliament last year had taken steroids beforehand, a London court heard on Monday.Last March Khalid Masood, 52, killed four people on the bridge before, armed with two carving knives, he stabbed to death an unarmed police officer in the grounds of parliament.It was the first of five attacks on Britain last year which police blamed on terrorism.