An elderly Virginia man was seriously injured in an explosion aboard his boat on Nomini Creek, a tributary of the Potomac River in Westmoreland County, authorities said.

The victim was Noel Walter, 74, who lives along the creek and was less than 100 yards from his dock when the incident occurred, said John M.R. Bull, spokesman for the Virginia Marine Police.

Walter and his adult son were motoring in a recreational sport boat when gasoline vapors from the boat engine ignited, Bull said. The blast burned Walter and blew him from the stern into the bow of his boat.

His son, Travis Walter, whose age was not given, was uninjured.

The U.S. Coast Guard and the Virginia Marine Police responded and helped both men to shore. Bull said the elder Walter was flown to Mary Washington Hospital in Fredricksburg with serious but non-life-threatening injuries.

The boat burned to the water line. The incident remains under investigation, Bull said.