A single-vehicle accident on Saturday caused a Trimble County, Ky., woman to be transported by helicopter to a Louisville hospital for her injuries.

Doris Powell of Bedford was southbound on U.S. 421 near the Midway Fast Stop when she lost control of her vehicle for an unknown reason and struck a tree, a Milton Fire and Rescue release said. Milton and Bedford Fire units responded to the accident around 12:14 a.m.

Trimble County EMS transported Powell to Air Methods where she was transported to University of Louisville for her injuries, the release said. Powell was listed in stable condition on Monday morning, a hospital spokeswoman said.

Kentucky State Police leads an investigation into the crash.