Authorities are investigating an arson after they say a pick-up truck was intentionally set on fire at the Pennsylvania State Police impound lot in Philadelphia. Firefighters were called to the Pennsylvania State Police Barracks on Belmont Avenue in Wynnefield Heights around 4 a.m. for reports of a vehicle fire. Footage from SkyFOX shows the charred remains of a Ford F-450 pickup truck. Investigators have not pubically identified any suspects, and they have not said what the motive for the possible arson could be. Authorities say no injuries were reported.