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GREENSBORO, N.C. (AP) -- A Greensboro man has been sentenced to life in prison for killing and dismembering his wife.

Winfred Simpson was sentenced Thursday after he was convicted of first-degree murder. Authorities said Simpson killed Retha Simpson because he was angry at her for cheating on him. She also accused him of infidelity.

Court records show Simpson accused his wife of pressuring him into joining a club where husbands and wives would swap partners. He testified he accidentally killed his wife, then was so distraught that he dismembered her.

A day after Retha Simpson was reported missing in March 2010, authorities found her dismembered body in a trash bag.

Winfred Simpson was arrested the same day. Police said they found blood and cleaning supplies at the couple's home while he was being questioned.

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