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OKLAHOMA CITY – The U.S. Supreme Court on Monday rejected the last appeal of a man who was sentenced to death in the killing of four people at an Oklahoma City trailer park 14 years ago.

The Oklahoman reports that Gilbert Ray Postelle and 20 other men will be eligible for an execution date once the state resumes executions.

Postelle was one of four men charged with conspiracy and first-degree murder in the killings at an Oklahoma City trailer park in 2005. Postelle was 22 when he was convicted in 2008, and he was the only one sentenced to death.

Prosecutors say the four believed one of the victims had severely injured Postelle’s father in a motorcycle accident, and they went to the trailer park seeking revenge.