Beaufort County Sheriff P.J. Tanner told The Island Packet of Hilton Head that some things found around where 46-year-old Gustavo "Gus" Melendez were odd, but he wouldn't give additional details.
Coroner Ed Allen says there was no sign of trauma and an autopsy couldn't determine a cause of death.
A deputy found Melendez 's body Wednesday after seeing his mo-ped on the side of the road.
Melendez brother had reported him missing Monday.