A 74-year-old Port Washington man was killed and another was injured when a boat exploded while refueling at a marina in Manorhaven on Wednesday afternoon.

Two marina workers were helping two men on a 33-foot Carver motor boat refuel after the vessel had pulled up to a dock when the explosion occurred, setting both the dock and the boat on fire at 2:48 p.m., Nassau County police said.

Robert J. Hogan was killed while the second reportedly jumped into the water. A third, who was on the dock, suffered burns to his arm and face when he pushed the boat away from the dock.

The boat then drifted to a nearby dock, setting it on fire and causing damage to two additional boats, police said.

The burn victim was taken to a local hospital for treatment of his injuries. No other injuries were reported.

Port Washington Fire Department firefighters extinguished the flames.

Homicide Squad detectives are continuing the investigation.

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