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.

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.

No injuries have been reported.

Drivers should expect delays in the area.

The cause of the fire is under investigation.