Reporter london terror when a home made one exploded on a commuter train during a morning rush hour. Suddenly i heard a big bang and i turn left and i saw the fire, and on my side. Reporter cell phone video from the subway car shows a white plastic bucket inside a shopping bag with what appears to be wires and a flame. Sources tell cbs news that the improvised explosive device had a timer, and didnt fully detonate. We managed to pull it both ways and then, run down the street as fast as we can. Reporter police are scouring the scene and searching for security cameras to find out who put the bomb on board. There are many other inquiries ongoing with hundreds of expected involved like at tv, forensic work and speaking to witnesses. Reporter they shut down part of the train line and locked down the southwest london neighborhood. There were children on board when the blast went off. Yes. Unaudible. Went flying. Reporter they had minor burns and burned hair from the heat. Shot through the t