Ex-Marine Guilty in Slayings of Marine Sergeant and Wife

Sgt. Jan Pietrzak, 24, and his wife Quiana Jenkins-Pietrzak, 26 via NBC San Diego

Former Lance Cpl. Kesaun Sykes is the final former Marine convicted of killing Sgt. Jan Pietrzak and his wife Quiana Jenkins-Pietrzak in 2008.

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