Suffolk County Police Second Squad detectives are investigating a motor vehicle crash that seriously injured a pedestrian in Greenlawn Dec. 1.

Police said a 63-year-old man was attempting to cross Clay Pitts Road when a 2012 Honda Odyssey traveling east at about 9 p.m struck him.

The pedestrian, whose identify is being withheld pending notification of next of kin, was airlifted to Stony Brook University Hospital for treatment of serious injuries. The driver of the Honda, Gigi Franklin, 54, of Greenlawn, was not injured.

The vehicle was impounded for a safety check and the investigation is ongoing. Detectives are asking anyone with information about the incident to call the Second Squad at 631-854-8252.