![From top left, Billy Chastain, Mark Chastain, Alex Stevens and Mike Sparks who were all found dead in a river in Oklahoma. AFP](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/KZFZREFN5JAKF2CV2LEUBKUU7A.jpg?smart=true&auth=a176bf98dd38e1b02a1833354d0a663fec5b4ea998933338adbab9061eb65397&width=400&height=225)
From top left, Billy Chastain, Mark Chastain, Alex Stevens and Mike Sparks who were all found dead in a river in Oklahoma. AFP
From top left, Billy Chastain, Mark Chastain, Alex Stevens and Mike Sparks who were all found dead in a river in Oklahoma. AFP
US police open murder inquiry after four dismembered bodies found
Four friends who disappeared nine days ago after leaving the home of one of them by bicycle discovered dead in a river