SHARPSVILLE, Pa -  The state fire marshal is working to learn what caused a late-night fire at a Mercer County business.

Firefighters from the Pymatuning Township department were first called out around 10:30 p.m. Thursday for an alarm at Johnson Industries on Orangeville Road.

When they got there, they saw smoke and flames coming from one of the buildings.

 Several area fire departments were called to help out with the two-alarm fire, including water tankers from two Ohio departments.

We're told the extent of the damage at the specialty wood product company isn't clear yet, but no one was hurt.