Warren Michael Williams was last contacted on September 30, 2018, in Phoenix, Arizona. He was 47 at the time and was known to frequent the area of North 75th Avenue and West Indian School Road. At disappearance he was described as a white male, 5 feet 8 inches to 5 feet 10 inches tall, 190 to 210 pounds, with brown shoulder-length hair, blue eyes, a scar on his forehead above his left eyebrow, and multiple tattoos: a partial sleeve on his right arm, a full sleeve on his left, calligraphy across his abdomen and the names of his children Zackery and Amanda.

Family concern grew when he stopped making contact, which was out of character. He was reported to have been experiencing homelessness and living a transient lifestyle. The Phoenix Police Department was notified and a missing persons report was filed on October 11, 2018; the case was entered into NamUs on October 10, 2019 as MP60791. The investigation remains open and the circumstances of his disappearance are unclear.

If anyone saw Warren in late 2018 or has information about his whereabouts, please share what is known with the Phoenix Police Department.