Authorities in Texas have arrested a man suspected in the Oklahoma shooting deaths of his wife and her two teenage children.Marshall County Sheriff Danny Cryer says the three bodies were found Thursday morning in their home near Madill, about 105 miles southeast of Oklahoma City. The sheriff says the suspect was arrested later Thursday in Abilene, Texas, more than 200 miles from where the shootings occurred.Cryer says the suspect was married to the woman and stepfather of the two children. No names were immediately released.Cryer says the suspect will be extradited to Oklahoma to face charges in what appears to be a domestic dispute that turned deadly.