Pennsylvania State Police are on the scene of a fatal crash on Interstate 81 southbound around milemarker 30.5 in Cumberland County.

The crash occurred around 9:50 a.m. this morning. Police report two vehicles involved in the crash - one is a tractor trailer, currently engulfed in flames, according to police. The other is a pickup truck.

The Interstate is closed in both directions. Traffic is being detoured southbound off of the Newville Exit (37) and back on at the Shippensburg Exit (29). Northbound traffic is being detoured off at the Shippensburg Exit (29) and back on at the Newville Exit (37).