An O'Fallon woman was killed Saturday in a head-on collision on Troy-O'Fallon Road, midway between Troy and O'Fallon.

Geralyn Wolfersberger, 56, was pronounced dead at 2:36 p.m. at Anderson Hospital in Maryville, according to a news release from Madison County Coroner Steve Nonn.

Wolfersberger was driving north in the 300 block of Troy-O'Fallon Road about 12:50 p.m. when her car entered the oncoming lane of traffic and collided head-on with another vehicle.

She was extricated from the wreck and transported to the hospital. She suffered blunt abdominal and chest injuries.

Two passengers in the southbound vehicle suffered non-life threatening injuries.

The crash remains under investigation; routine toxicology testing will be conducted, Nonn said.

Funeral arrangements will be under the direction of Wolfersberger Funeral Home in O'Fallon.