Tyler Ruiz was a resident of Mesa, Arizona. ^{[2] [1] [0]}

Ruiz was in a relationship with Chelsey Anderson and the father of a one-year-old son. ^{[2] [1] [0]}

On Monday, February 5, 2018, officers responded to the El Rancho Apartments near Horne and Main Street at around 1:00 a.m. local time for a report of shots fired.

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When crews arrived on scene, they found Tyler Ruiz and Chelsey both dead in an apparent murder suicide at the scene. Chelsey's sister, Sharice Anderson, was found suffering from a gunshot wound outside of the apartment. Chelsey's son was also in the apartment at the time but was not injured. ^{[2] [1] [0]}

Authorities stated that Ruiz shot and killed Chelsey, and shot at her sister before committing suicide. ^{[2] [1] [0]}