Jose Guillermo Barrientos Martinez, 44, was last known to be near Altar in Pima County, Arizona, around January 1, 2008. He was reportedly in the process of crossing the U.S.-Mexico border north of Altar when he disappeared. Physical descriptors are limited: listed between 5 feet 9 inches and 5 feet 11 inches and about 190 to 210 pounds; no clothing details or distinctive features are available.

The disappearance was not reported until July 10, 2009, when the Pima County Office of the Medical Examiner opened the file as case number FSC MPR 934. Beyond the approximate location and the general context of a border crossing, there are no published details about his route, companions, or mode of travel.

Anyone with information about Jose’s movements near Altar around early January 2008, or who might have seen him during a border crossing north of Altar, is asked to come forward.