SMYRNA, Del. (CBS) – Three inmates were sentenced Friday for their roles in a deadly 2017 prison riot at the James T. Vaughn Correctional Center in New Castle County. Self-proclaimed riot leader Dwayne Staats was convicted of murder and was already serving a life sentence.

Staats, 37, received two life sentenced plus 153 years.

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Jarreau Ayers, 38, was sentenced to 123 years, and 54-year-old Royal Downs was sentenced to three years.

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Ayers and Downs were also serving life in prison for murder.

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Correction officer Stephen Floyd was killed, two other guards were beaten during the riot, and a female counselor was held hostage for nearly 20 hours before she was rescued.