The body of 11-year-old Audrii Cunningham was found on Feb. 20, according to law enforcement officials in Polk County after the 11-year-old had been missing for a week. Her body was found by search crews in the Trinity River under U.S. Highway 59. Polk County officials are preparing an arrest warrant charging Don Steven McDougal of capital murder in Audrii's death, District Attorney Shelly Sitton said. Sitton also noted that McDougal is already in jail on an unrelated felony charge.