An 11-year-old boy is in custody after he confessed to fatally shooting a former Louisiana mayor and his adult daughter, a police official said Monday.

Joe Cornelius Sr., 82, and Keisha Miles, 31, were found dead Sunday morning after officers were dispatched to the former official’s home in Minden, a city of nearly 12,000 east of Shreveport, the city’s police chief said.

Police Chief Jared McIver identified the boy as a relative of Cornelius’ but declined to provide additional details and said authorities have not determined a possible motive. He said the child’s age limited what information police could release about his relationship to the victims.