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SACRAMENTO - A head-on collision killed on woman on eastbound Interstate 80 east of Reed Avenue in the West Sacramento area early Thursday morning.

The woman was in a Saturn Ion. The Saturn and a Mercedes Benz E350 collided around 2 a.m., according to the California Highway Patrol. The driver of the Mercedes, a 66-year-old man from Rocklin, suffered minor injuries.

The driver of the Saturn was trapped in her car. The CHP said emergency responders extricated her but she died at the scene.

CHP investigators were not sure whether the Saturn became disabled on the freeway and was facing the wrong way or its driver was traveling in the wrong direction on eastbound 80.