2 Bicyclists Pronounced Dead after Hit-and-Run Collision on Pontatoc Road

TUCSON, AZ (March 22, 2022) – Saturday, Kenneth Cook and Gretchen Cook were killed, and Ryan Machado was arrested in a Sunset Drive crash.

Officials responded to the scene near Pontatoc Road around 9:45 a.m.

Per preliminary investigation, a Cadillac Escalade struck two cyclists were heading east on Sunrise Drive.

The Cadillac was driven by 26-year-old Machado, who immediately drove away from the scene upon impact. Crews were able to later locate the suspect at the intersection of River and Alvernon Road.

As a result, authorities arrested Machado and booked him into the Pima County Adult Detention Center for manslaughter, leaving the scene of a fatal collision, criminal damage, and driving under the influence.

Due to the extent of injuries sustained, medical personnel pronounced the two cyclists dead at the scene. Police identified the victims as 74-year-old Kenneth Cook and 62-year-old Gretchen Cook.


The team at Sweet James offers their warm and sincerest sympathies to the friends and family of Kenneth Cook and Gretchen Cook during this devastating time.


Losing a loved one in a bicycle accident can have devastating effects on the emotional and financial well-being of those left behind. Let the wrongful death attorneys at Sweet James help you during this trying time. With 20 years of experience in the field, they know what it takes to help you win your case. All of the attorneys at Sweet James strongly believe each client’s case is unique and deserves full individual attention. Call their office today at (800) 975-3435 for a free and confidential case evaluation. They are available 24 hours a day and 7 days a week through email, text, and online chat. Click here to request a police report.

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LA Weekly