On January 1, 2017, Milles felt unwell at Corcoran Prison and was transported to Mercy Hospital in downtown Bakersfield for gastrointestinal bleeding. Following treatment, he was moved from the hospital to prison on January 6, 2017.
On November 15, 2017, he was returned to the Bakersfield hospital, however, the California Department of Corrections and Rehabilitation has not confirmed this information.
On November 19, 2017, he died in a hospital following cardiac arrest brought on by colon cancer-related respiratory failure.
