Marco Noe Santillan Lopez was 28 when he was last seen on September 8, 2011, in Nogales, Arizona. He reportedly was attempting to cross from the United States into Mexico; that moment is the last known sighting. Marco is a Hispanic male, 5 feet 10 inches, weighing 135 to 155 pounds, with black hair and dark brown eyes. He was known as Puma and had tattoos including the name Imanol on his left arm and rings on his fingers.

He had pierced ears, a small scar on his right hand, and was carrying a piece of paper with a phone number when last seen. The Pima County Medical Examiner’s Office is listed as the investigating agency. Very little additional public detail about the course of any investigation is available.

If anyone saw Marco around Nogales on or after September 8, 2011, or has information about his whereabouts, please come forward.