ST. FRANCISVILLE — A jury convicted Angola inmate Robert G. Carley of first-degree murder Saturday night in the Dec. 28, 1999, stabbing and beating death of Louisiana State Penitentiary security Capt. David C. Knapps.

Presiding Judge Jerome M. Winsberg said the panel, chosen Sept. 6 in Covington, will hear testimony Sunday to decide whether Carley, 43, should be sentenced to death or life in prison.

Carley is now serving life at Angola for second-degree murder in the October 1987 slaying of a St. Bernard Parish gas station attendant during an armed robbery.