A 42-year-old San Augustine County man found himself behind bars after he allegedly fired a .22-caliber rifle during an argument with his estranged wife Wednesday afternoon. Gary Cunningham, chief deputy of the San Augustine County Sheriff's Office, said that deputies responded to a disturbance call at a house located near FM 3250 in western San Augustine County. He said, based on what the complainant told the deputies, she and Nix, her estranged husband, got into a heated argument after he was served with divorce papers. During the altercation, Nix allegedly brandished a rifle and fired it but not necessarily in the woman's direction. Nix then fled the scene. SACSO deputies apprehended Nix a short time later. He allegedly had a .22-caliber rifle with him when he was arrested. Richard Nix is still being held in the San Augustine County Jail on a charge of aggravated assault with a deadly weapon. No bond has been set at this time.