RedactedNarrative: On february 19, 2017, at or about 1526 hours,the sullivan county sheriff's department dispatched me to a boat accident on sullivan lake. At the time it was unknown how many occupants were in the water. I arrived at the main ramp and noticed a bass boat approaching, carrying several individuals. The witness of the bass boat was identified, and he had rescued all the occupants. Subject1, a 12 year old boy with autism, was still panicking. Subject1 was the only person wearing a personal flotation device. Sullivan county ambulance team treated subject1 for hypothermia. 
  
       i had witness explain what he witnessed. Witness said he was fishing in a cove and noticed a boat swamped in the main channel. Witness said all the occupants were in the water and he immediately responded. Witness was able to pull the four victims safely into his boat. 
  
       i interviewed operator who reported he was operating the boat. Operator said he was accelerating in the main channel, heading towards the main ramp. Operator said the boat started to take water and he decelerated. Operator said water continued to enter over the bow of the boat. The boat eventually became inoperable and swamped. Operator believed they were in the water for approximately two minutes before being rescued. Operator said there was enough lifejackets inside the boat, but weren't accessible. Operator said he had two passengers riding near the bow of the boat. 
  
       the boat and possessions were retrieved by a boater and towed to the main ramp. I inspected the 14 foot jon boat and only noticed two type iii personal flotation devices. Subject1 was wearing a pfd. The boat was an older make and i couldn't find a carrying capacity plate. The boat was powered with a 4 horsepower tohatsu outboard. Based on the evidence i determined the cause of the accident was due to an overloaded boat. 
  
       i spoke to operator again about only finding two lifejackets and he was insistent there was a third lifejacket inside the boat.