State troopers say two people have died in a motorcycle crash on Route 20 in Pompey.

Officers say it happened between Gardner and Ridge Roads, and there were no other vehicles involved. A witness said the motorcycle was on a long downhill going eastbound when he crashed into a guardrail along a curve. The bike then crossed the road and hit the guardrail on the other side. Troopers say a woman was pronounced dead at the scene and a man was airlifted to Upstate University Hospital where he later died.

Police have no indication as yet what caused the motorcycle to lose control. The victim's names have not been released until family is notified.