FRANKFORD (WPVI) --The Philadelphia fire marshal is investigating after two parked tractor trailers caught fire on a street in Frankford.
The flames broke out at 12:30 a.m. Wednesday.
Both trucks were parked in the 4100 block of Tacony Street at the time.
Firefighters doused fires in the cab of each truck.
The windows of both vehicles had been smashed, and both trucks sustained significant damage.
No one was hurt.