Authorities say the deaths of a man and a woman found in Muskogee County are being investigated as a possible murder-suicide.
Sheriff Charles Pearson said Wednesday that both had been shot in the head, and a gun which investigators believe was used in the shooting was found underneath the man's body.
A witness reported seeing the couple arguing and stopped to offer assistance. By the time the witness had driven back by about 15 minutes later, a law officer and an ambulance had arrived at the scene and found the pair. No names have been released at this time.