A husband and a wife were killed Saturday morning when they were struck by an SUV as they rode their bicycles in the Catalina Foothills.

Around 9:45 a.m., Kenneth Cook, 74, and Gretchen Cook, 62, were riding east on Sunrise Drive, near Pontatoc Road, when they were hit by a Cadillac Escalade, the Pima County Sheriff's Department said in a news release.

The couple was pronounced dead at the scene.

The driver of the Escalade, 26-year-old Ryan Machado, drove away but was found by deputies at River Road and Alvernon Way.

Ryan Machado Courtesy Pima County Sheriff's Department

Machado was arrested on suspicion of manslaughter, leaving the scene of a fatal collision, criminal damage and driving under the influence.