Fog was a concern Monday morning, particularly dense in areas in northern Butler County.
But, firefighters don’t believe fog was the cause of a crash just north of the county line in Venango County.
Clintonville Fire Chief Gerry Rea said a tri-axle truck rolled over about 9 a.m. on Libson Power Plant Road near the Scrubgrass Plant.
“They believe he probably just drove off the road and once he did that, there was no coming back at that point,” Rea said.
No other vehicles were involved and the driver wasn’t hurt. State Police are investigating.