A woman has been convicted of killing a gambler she followed after he won $10,000 at a Southern California casino.

The Orange County Register says (hthttp://bit.ly/1OUHQcp) 51-year-old Barbara Ann Hamel was convicted Monday of first-degree murder and robbery.

Hamel originally pleaded guilty and faced a sentence of 15 years to life in prison, but she later withdrew her plea. She now faces life in prison without parole when she is sentenced May 29.

Hamel's accomplice, Tad Allen Carroll, pleaded guilty and was sentenced to 25 years to life.

Prosecutors say the pair followed 55-year-old Chi Bui after he won $10,000 at the Hawaiian Gardens Casino in 2010.

Prosecutors say Carroll knocked him down, and Hamel drove over his head, killing him instantly.

A third defendant, Michael Ross, received a 15-year sentence.

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Information from: The Orange County Register, http://www.ocregister.com