LifeStar is responding to a motorcycle crash in Old Lyme, according to the medical helicopter service.
Police said Route 156 is temporarily closed but will reopen shortly. The helicopter landed at Rocky Neck State Park and is transporting the motorcycle driver to the hospital, LifeStar dispatchers said.
State police said no other vehicles were involved in the crash.
The motorcyclist's condition is unknown.
No additional information was immediately available.
