Miguel Piña Ruiz was 25 when he was last seen on August 10, 2011, in the Lukeville, Arizona area near the U.S.-Mexico border. Reports say he was in the process of crossing the border when he disappeared; no further confirmed sightings are recorded. He is described as Hispanic, 5 feet 3 inches tall, 165–170 pounds, with brown hair and brown eyes.

At the time he vanished he was wearing a white sleeveless shirt, black jeans, and long white socks, and he carried a black wallet and wore a synthetic leather belt. Family members said he had a photograph of a young girl, about two to three years old, and possibly a paper with telephone numbers. He had tattoos: the name Sara on his right arm and a band of thorns around his left shoulder. The Pima County Medical Examiner’s Office opened a case file in September 2011; the case is cataloged as NamUs MP16858.

Few concrete leads have been published about Miguel’s movements after August 10, 2011. Anyone with information about Miguel, his tattoos, or sightings in the Lukeville border area is asked to come forward.