Commuter train catches on fire

A packed commuter train caught fire in Philadelphia Wednesday morning.

About 100 passengers had to be evacuated after a fire broke out on this regional commuter train in west Philadelphia.

Investigators say the fire was electrical in nature and started either in a heater or a traction motor.

No one was injured, but this just added to the chaos caused by a strike by mass transit workers in Philadelphia.

No talks are scheduled to end the strike by 5,000 members of the Transport Workers Union Local 234 who walked off the job Tuesday morning, shutting down subway, trolley and bus service in the city.