Daniel Enriquez Estrada, 24, was last heard from on July 5, 2011. He called his mother around noon to say he was at the border, preparing to cross from Agua Prieta, Mexico, into Douglas, Arizona, and then all contact ceased. His family has not heard from him since.

Daniel is described as a Hispanic male, 5 feet 6 inches to 5 feet 8 inches tall, 130 to 140 pounds, with brown hair, brown eyes and a scar on his eyelid. He was carrying a black spray-painted backpack containing blue jeans, a white shirt, black socks, a baby blue blanket with balloons, a silver wedding ring, a note with the prayer Salmo 91, and a dark brown wallet carved with the letters V and L. He wore a black and gray striped button-up shirt, black stone-washed jeans (one pocket burned with battery acid), black work boots and a yellow baseball cap with a metal-rimmed hole.

The family’s report of that last call began a cold case handled by the Pima County Medical Examiner’s Office. What happened to Daniel after he crossed into the desert terrain of southern Arizona remains unknown. If anyone has information about Daniel’s route, sightings that day, or belongings, please come forward.