A 68-year-old Ohio woman has died after the motorcycle she was driving was struck by a semitrailer, police said.

Linda Skidmore, of Gallia County, was killed shortly after noon Saturday while riding with several other bikers in Jackson, the Ohio State Highway Patrol said. She wasn't wearing a helmet, police told WSAZ-TV.

Witnesses told police Skidmore was heading west on U.S. 35 when she moved for some reason into the left lane as the group of bikers slowed to turn right.

A tractor-trailer driven by Thomas Jackson, 62, of Columbus, Georgia, was behind the group and tried to move left to pass them, but hit Skidmore, police said.

She died from injuries suffered when she was knocked from her Harley Davidson bike, police said.

No charges were filed against the truck driver, WOWK-TV reported.

The Associated Press contributed to this report.