Police responded Monday afternoon to a fatal head-on collision between a car and a pickup truck on Route 139 in Unity, a Kennebec County sheriff’s deputy said.

The car’s driver, a 59-year-old woman, was killed, said Sgt. Frank Hatch of the Kennebec County Sheriff’s Office.

Her name was not being released pending notification of family members, Hatch said.

Two female passengers in the car, a 2005 Chevy Cavalier sedan, were taken to a hospital with injuries.

The 29-year-old male driver of the pickup truck, a 1995 Ford Ranger, also was injured and taken to a hospital, Hatch said.

The collision occurred around 2:30 p.m.

No further information was available.