FRANKFORT, Maine (AP) — A woman has been killed and her 3-year-old son injured in a crash in Frankfort.

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State police say Teresa Sirois was behind the wheel of a car that crossed the centerline and collided with an oncoming car Tuesday afternoon in Frankfort.

The 34-year-old Brooks woman was pronounced dead at the scene. Her 3-year-old son, Damian Sirois, was injured while in his car seat in the back. He was taken to a hospital with non-life-threatening injuries.

The driver of the other car also was hurt and was taken to a hospital.

Investigators are working to determine why Sirois' car went into the other lane.