First responders rushed to the scene of a tractor-trailer fire that shut down an interstate highway ramp in Mercer County.

The truck fire, reported shortly after 6 a.m. Friday in Shenango Township has closed the ramp at the 4A exit from Interstate 80 westbound to I-376 southbound.

21 News is working to learn if anyone was injured.

There is no word on when the ramp will open again.