The Brief Manatee County Sheriff Rick Wells said the medical examiner has not determined how Giovanni Pelletier died, and toxicology results have not been returned. A family friend found the 18-year-old's partially submerged body in a retention pond in Manatee County on Aug. 8. What they're saying:"There’s no one in this area with Giovanni," Manatee County Sheriff Rick Wells explained. Courtesy: Pelletier family. Dig deeper:Brevard County Sheriff Wayne Ivey said the family willingly turned over the vehicle to be processed.