Byron Noe Perez was last seen on December 12, 2007, while crossing the U.S.–Mexico border near Douglas, Arizona, with a group of migrants who reportedly entered from Agua Prieta, Mexico. At some point during the desert crossing he was left behind; the circumstances of that separation are unclear. The Pima County Office of the Medical Examiner later opened an investigation and his case has been compared against unidentified remains over time.

At the time he disappeared Byron was described as a Hispanic male, about 5 feet 3 inches to 5 feet 4 inches tall, weighing 165 to 185 pounds, with black hair and brown eyes and a noticeable marking on his neck. He was wearing a black hooded sweatshirt, a light blue T-shirt, two pairs of pants (one blue denim Wrangler and another Lee pair of unknown color), white underwear with blue stripes, and yellow military-style boots. An item with phone numbers embroidered in yellow was also noted but no images have been made available publicly.

Few additional details are known about his movements after he was left during the trek. Does anyone have information about Byron’s crossing near Douglas in December 2007 or recall seeing someone matching his description that day?