Man Charged With Killing Four Who Were Found Dismembered in Oklahoma. Murders, Attempted Murders and Homicides, Kennedy, Joseph L (1955- ), Okmulgee (Okla), Deep Fork River (Okla), Chastain, Bill (d 2022), Chastain, Mark (d 2022), Stevens, Alex (d 2022), Sparks, Mike (d 2022)