the royal canadian mounted police, rcmp, respond to a silent alarm. >> a disturbed man holding a storet inside this qwik stop convenience store all caught on camera by an amateur photographer. the man says he has two improvised explosive devices, or ieds. to protect the public and contain the scene, police quickly close the street and divert traffic. a first blast inside the store knocks the door open. with all the commotion, a crowd gathers. people keep onlookers away from the store, but people can see enough to offer a running commentary. >> the next time that door opens, that's going. suddenly, they're shocked to see the assailant appear. threatening the clerk with a knife. the man baits the police, yelling "shoot me" several times. meanwhile, bystanders growing angry and impatient, attempt to negotiate with the hostage taker in their own way. >> let her go you [ bleep ] coward! >> quiet down. >> then without warning, just as police begin moving their canine unit into position, the man lets the hostage go. >> run! run! >> at this point police move in. >> shoot me, mother -- >> he ma