Nestor Manuel Cabrales Valenzuela was 17 when he was last seen on July 2, 2012, in Altar, Sonora, Mexico. He is described as a Hispanic male, about 5 feet 10 inches tall, 160 pounds, with brown hair and brown eyes. Reports say he was with a small group intending to cross into the United States; what happened after that point is unknown.

The case was not reported to the Phoenix Police Department until October 27, 2018, and an entry for the case was created in the NamUs database the same day. Investigators and the family have released few details about clothing or other distinguishing features, and there have been no public updates since the report was filed.

Anyone who knew Nestor, saw him around Altar in July 2012, or has information about migrants who crossed from that area is asked to contact the Phoenix Police Department.