Ronald Eugene Jacoby of Marana has died from serious injuries sustained in a single motorycle collision on Friday.
Marana Police and Northwest Fire responded to a single motorcycle collision at Silverbell Road and Jackson Flats Trail on Friday night.
Jacoby, 64, was transported to Banner University Medical Center with serious injuries and later died of injuries from the crash.
Investigators are still continuing their investigation. The preliminary investigation shows that Jacoby was traveling northbound on Silverbell and collided with a large rock on the side of the road because of a sharp curve in the road.