HOT SPRINGS, Ark. (AP) - A Hot Springs woman has been sentenced to 20 years in prison after pleading guilty to first-degree murder.

Sara Whitfield had been set for trial May 16 in the 2010 death of Kenneth Berthia. The Sentinel-Record reports ( that Whitfield entered the plea Tuesday in Garland County Circuit Court.

She was one of two people charged in Berthia's death. The 53-year-old was found in the back of a pickup truck, brutally beaten and with his throat slashed. In March, Whitfield's boyfriend pleaded guilty to first-degree murder and was sentenced to 23 years in prison.

Prosecutors say Whitfield was an accomplice in Berthia's death. Whitfield testified that she and her boyfriend intended to rob Berthia, but he ended up getting killed.

Whitfield will be eligible for parole after serving 14 years.

(Copyright 2012 The Associated Press. All rights reserved.)

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