Cham started struggling in the water, so Phoeur swam out to help him. Cham was rescued by some swimmers nearby on a raft, but Phoeur went under and couldn't be found.
The Coast Guard deployed their helicopter and dive team in a desperate search for the missing boy.
At 6:30AM Monday, Avon Lake firefighters went back in the water and found Phoeur's body.
Phoeur would have been a senior at John Marshall High School this fall.