Washington Parish Sheriff's Office Deputy O'Neal Moore was ambushed and killed while on duty June 2, 1965, in rural Washington Parish. Moore was on patrol with his partner, Deputy David "Creed" Rogers, when the pair was shot from ambush by unknown assailants. Deputy Moore was killed and Rogers was injured. The case remains unsolved.
On June 2, 2015, fifty years following the assassination of Deputy Moore, he was honored by Washington Parish Sheriff Randy Seal in a memorial service at the Sheriff's Office. Deputy Moore's widow, Maevella N. Moore, and Sheriff Seal placed a wreath next to the bronze relief plaque of Deputy Moore in the lobby of the Washington Parish Sheriff's Office.
In his remarks to the late morning crowd which gathered in front of the Sheriff's Office, Sheriff Seal reminded everyone present of the ultimate sacrifice made by Deputy Moore and his family. "This was a cowardly deed that brought devastation to the Moore family. In spite of their tragic loss, they have persevered and continued to be one of the finest families in our parish. While we cannot erase the past, we can continue to work together to improve the future."
Deputy Moore was a U.S. Army veteran and had served with the Washington Parish Sheriff's Office for one year. He was thirty-four years old at the time of his death and was survived by his wife and four young daughters.