India, July 16 -- GPS data from the Mississippi Department of Marine Resources, obtained by CBS News, has tracked the movements of the boat Nolan Wells was on when he headed to Horn Island on July 4. The Ocean Springs, Mississippi, teen was found dead in the water on the northwest end of Horn Island on Monday morning, July 6. Wells went missing on July 4 after taking a boat to the island with friends. The search for the teen was called off after a body was found by a park ranger on Monday, July 6.

The vessel left a dock at approximately 9:56 a.m. that morning, per the data. It arrived at Horn Island at 11:14 a.m. CBS News previously reported that Wells was not on the boat when it left the island.

The GPS data shows that the boat left Ho...