DARLINGTON - A Benton man was charged Monday with first-degree sexual assault of a child after a series of incidents when he molested an underage girl between May and August. Robert J. Hoyer Jr., 63, faces a Class B felony charge of first-degree child sexual assault and related charges. Hoyer was charged after the victim made comments to her mother that insinuated that Hoyer had had some form of sexual contact with her around Aug. 20.