CUMBERLAND, Md. — A state prison inmate has been found mentally incompetent to stand trial for the 2013 killing of another inmate at the maximum-security Western Correctional Institution near Cumberland.

Thirty-six-year-old Darnell Thompson had a competency hearing Tuesday in Cumberland. He is charged with first-degree murder in the killing of 29-year-old Jason Wallace.

Wallace was found unconscious in his cell during an inmate recreation period. State police and correctional officials didn’t immediately respond to requests for details about the circumstances of his death.

People found incompetent for trial in Maryland are typically referred for treatment and receive competency reviews at regular intervals.

Online court records show that Thompson was sentenced to eight years in 2011 in Howard County for assaulting a law-enforcement officer.

State police say Wallace was serving time for robbery.

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