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.

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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.