A 49-year-old Miller Place man was killed in a one-car accident Wednesday in Port Jefferson Station, police said.

Gerard Daguanno was killed when his 1998 Oldsmobile left the road on westbound Route 347 near Woodhull Avenue and struck a utility pole at 8:12 p.m., Suffolk County police said.

Police said Daguanno, who was alone in the car, was pronounced dead at the scene.

The investigation into the cause of the accident is continuing.

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Police said the vehicle was impounded for a safety check.

Detectives ask anyone with information about the crash to call the Sixth Squad at 631-854-8652. All calls will remain confidential, police said.