A jury convicted one former New York State corrections officer of murder in the 2024 beating death of inmate Robert Brooks, while acquitting two others of all charges.

The verdict was delivered Monday, Oct. 20, in Oneida County Supreme Court after 10 days of trial and two full days of deliberations.

Former officer David Kingsley was found guilty of murder and manslaughter. He faces 25 years to life in prison when he is sentenced in December.

Two of his co-defendants, former corrections officers Nicholas Kieffer and Mathew Galliher, were acquitted on all counts. Both had faced gang assault charges, and Kieffer was also charged with falsifying records.

The case stems from a Dec. 9, 2024 assault inside Marcy Correctional Facility, as Daily Voice reported. Brooks, 43, of Rochester, had jus

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