Oscar Alonso Armenta Luque, 31, was last seen January 16, 2013, on the Tohono O’odham Nation Reservation in Pima County, Arizona. Reports say he was traveling through the reservation after crossing the border, became ill, and was left alone in the desert by companions somewhere between the villages of Vaya Chin, Ventana, and Kaka.

Oscar is described as Hispanic/Latino, with brown hair and green eyes, standing between 5 feet 2 inches and 5 feet 8 inches and weighing 170 to 200 pounds. Distinctive features include a small scar on the back of his head, the tip and nail missing from his left thumb from prior surgery, very little beard but a mustache, and heavy eyebrows. He was wearing blue Mark Anthony jeans, a navy thermal shirt, a plain navy fleece sweater, a beige Dockers jacket with a brown collar, brown 310 metal shoes with the logos removed, double socks, a camouflage hat, and gloves when last seen.

The Tohono O’odham Nation Police Department handled the investigation. Few other details are available about what happened after he was left in the desert.

If anyone has information about Oscar’s last movements or where he might have been taken, please share what you know.