PENNGROVE (CBS/AP) -- A Petaluma woman was killed after being ejected from her car and struck by a friend who was driving close behind her.

The California Highway Patrol said the 27-year-old was speeding down a street in the town of Penngrove without wearing a seat belt when she lost control of her Toyota Rav 4 early Saturday. She was ejected from her car when it overturned.

Authorities said a friend who had been drinking with her at bars and restaurants in Petaluma, and was following her to her home, ran over her.

Officers arrested 28-year-old Kyle Turek and booked him for investigation of manslaughter, DUI and driving on a suspended license.

It's not immediately clear whether the woman was killed from being ejected onto the roadway or from being struck by her friend's Honda Fit.

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