A motorcyclist was airlifted to Stony Brook University Hospital with serious injuries after he struck a deer Sunday evening in Calverton, Riverhead Town police said.
The incident occurred on Route 25 west of Manor Lane and was reported in a 911 call at 8:22 p.m.
Police said arriving patrol officers found the motorcyclist, whose identity has not been released, in the roadway suffering from undisclosed injuries.
After an assessment and treatment on scene by a crew from Riverhead Volunteer Ambulance the man was flown by medevac to Stony Brook.
His condition was not known Monday.
Police said detectives determined the motorcyclist struck a deer, but ask that anyone who may have witnessed the accident call them at 631-727-4500, extension 328.