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SAN BERNARDINO, Calif. (FOX 11) - The woman who California police say struck a pregnant woman with her car and fled the scene has been arrested.

Mercedes Vanesa Guevara, 31, was taken into custody Monday on suspicion of vehicular manslaughter.

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Surveillance video shows the pregnant woman crossing the street around 11:30 p.m. at West Highland Avenue and North Medical Center Drive.

She almost made it completely across the intersection when she was hit by a speeding car, video shows. The woman was pronounced dead at the scene, as well as her unborn child.

Police said the female driver of the vehicle only stopped after crashing into a tree. She was then picked up by someone else and fled the area.

Detectives were canvassing the scene Thursday searching for more evidence. Anyone with information was asked to call the San Bernardino Police Department at (909) 384-5742.

Portions of video used in this story are restricted to the Los Angeles area.