Hamilton firefighters are investigating the cause of an explosion that destroyed a North End home Friday afternoon. The blast blew open the side of the red brick home at Oak & Hudson Streets just before 2:30pm Friday. A man and woman were transported to the hospital for apparent non life threatening injuries. A fire that broke out after the explosion caused so much damage, the house had to be razed after the flames were extinguished. The man told investigators he was inside the darkened home when he flicked open a cigarette lighter, triggering the massive explosion.