Aurelio Contreras Quintero was 34 when he was last seen on July 15, 2012, near the U.S.-Mexico border by Lukeville in Pima County, Arizona. A Hispanic male between 62 and 64 inches tall with brown hair and brown eyes, he was reportedly wearing Levi’s blue jeans, a black shirt, and a baseball hat with a W. Among his possessions was a Mexican voter ID card.

His disappearance is tied to an attempted border crossing into the Sonoran Desert, a remote area where extreme temperatures and rugged terrain have led to many people becoming lost or dying. The Pima County Medical Examiner’s Office handled his case, and public details are sparse, leaving key questions about his route and fate unanswered.

If anyone knew Aurelio, saw him around Lukeville, or has information about his crossing on July 15, 2012, please come forward.