A state medical examiner's report says a Broken Arrow teen found dead at Fort Gibson Lake drowned.
18-year-old Jarret Clark's body was found in May after a graduation camping trip with friends. It's still not clear what led to the drowning. Investigators say they've been told Clark was in a fight and had been drinking.
Tests show Clark was not drinking alcohol. Nearly four months later, there are still many unanswered questions.
Jarretâ€™s mother Tammy Slater: "Somebody needs to be held accountable for what they did. Jarret did not just walk into the water. Somebody put him in the water. Absolutely. Somebody needs to be held accountable."
The Oklahoma State Bureau of Investigation and Wagoner County Sheriff's Office are still actively investigating the case.
Anyone with information should contact investigators.