SACRAMENTO (CBS13) – A pedestrian was struck and killed by a vehicle along Interstate 5 in south Sacramento early Sunday morning, authorities say.

California Highway Patrol says, a little after midnight, a driver reported seeing a dark object moving across southbound I-5. The driver didn’t have enough time to react, however, and struck the object – which turned out to be a person.

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Officers say the driver pulled off the freeway at Pocket Road and called 911. The driver stayed at the scene.

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The pedestrian suffered fatal injuries in the collision. No details about the pedestrian, other than that she was female, have been released.

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CHP says the driver cooperated with the investigation and showed no signs of impairment.