A man accused of killing his girlfriend has been sentenced to at least 23 years in prison.

Antuanne Shaw reached a deal with prosecutors Thursday and pleaded guilty to second-degree murder of Priscilla Mason.

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The single mother was shot to death in September 2004 while working at a Cash Advance store in Durham's Duke Crossing Shopping Center.

Investigators said the two had a violent relationship. In 2002, Shaw pleaded guilty to abusing Mason.