Ruptured gas line explodes in northern California neighborhood.
At least four people are dead and dozens more are injured after a massive explosion in a northern California neighborhood.
Fire crews are still on the scene trying to put out several fires burning throughout the San Bruno community.
A gas line ruptured Thursday evening, destroying more than 50 homes and damaging at least 100 more.
Officials are continuing to search the rubble for victims as they try to keep the fire under control.