MIDDLETOWN TOWNSHIP, Pa., (CBS) — Chopper 3 was over the scene of a truck fire in Middletown Township, Bucks County.

The incident was reported Wednesday night on the ramp at Business Route 1 and I-95.

READ MORE: SEPTA Union Unanimously Approves Strike If Deal Isn't Reached

It’s not clear what caused the fire or what is inside the tanker.

Emergency crews are on scene and HAZMAT crews have been called to assess the situation, CBS 3 is told.

The ramp has been closed.

READ MORE: Philadelphia Weather: Chance Of Severe Weather As Parts Of Region Could See Up To 3 Inches Of Rain

No injuries have been reported.

Drivers should expect delays in the area.

The cause of the fire is under investigation.

MORE NEWS: Lower Merion Police Help Dog Walkers Become More Aware, Alert While On Walks