Adan Murillo Sanchez, 26, was last seen with his brother Pedro on September 14, 2011, as the two attempted to cross the U.S.-Mexico border into Arizona. Adan is described as Hispanic, 5 feet 6 inches tall, about 140 pounds, with black hair, brown eyes, a mustache and a scar next to it. Clothing details are sparse; records list a pant size of 32 and shoe size 8.

The brothers disappeared in a remote stretch of borderland and no witnesses or further evidence have surfaced. The Pima County Medical Examiner’s Office received Adan’s case with a report date of December 15, 2011. Little else is publicly known about their movements after they were last seen.

If anyone saw Adan or Pedro around the border on or after September 14, 2011, or has information about their disappearance, please share what is known.