Updated at 5:45 p.m.: Suffolk Police identified the driver of the motorcycle as Stephen Peragine, 54, of Smithtown.
A Smithtown motorcyclist is in critical condition after an accident on Daly Road Thursday afternoon.
Suffolk County police said a 911 call was received reporting a motorcyclist accident on Daly Road near Commack at 12:50 p.m. Thursday.
Stephen Peragine, 54, was driving a 2000 Harley-Davidson motorcyle southeast on Daly Road, 200 feet north of Blacksmith Lane, when he lost control of the bike and crashed into a tree on the opposite side of the roadway.
Peragine was airlifted via Suffolk County helicopter to Stony Brook Medical Center, where he is in critical condition. The Dix Hills Fire Department also responded to the crash.
Police have impounded the motorcycle for a safety check.
The accident caused Daly Road to be temporarily closed in both directions on Thursday afternoon.