Pima County Sheriffs Department and Vail District deputies responded to a motorcycle crash on the Eastside of town.
They say it happened Thursday just before 5 p.m. on East Old Spanish Trail and South Galileo Lane.
Deputies say the rider of the motorcycle, a 17-year-old, was found to have serious injuries. He was pronounced dead at the scene.
Nobody else involved was hurt.
This investigation remains ongoing.