Alaska State Troopers are investigating the possible drowning of a 55-year-old man near Dillingham following a boat explosion.

"The man was reportedly pouring gas into the engine," said Alaska State Trooper spokesperson Megan Peters. She says it's unclear what ignited but an explosion threw the man into the water in the Ralph Slough area. 

According to Troopers the victim was not wearing a Personal Flotation Device at the time and is believed to have drowned. His body is being sent to the State Medical Examiners office for autopsy.

The boat was damaged significantly but a cost estimate is unknown according to Peters. 

The name of the victim has not yet been released because family is still being notified.