An unidentified pedestrian was killed in a hit-and-run crash early Sunday on East 22nd Street, Tucson police say.

A 15-year-old motorcyclist was killed in a crash early Sunday when Tucson police say he ran a red light and collided with a car.

On June 9, Jan Janisch-Hanzlik became what Nebraska Medicine researchers believe to be the first in the world to receive an experimental treatment for multiple sclerosis.