Santos Carcamo, 51, was last seen on January 15, 2006, while passing through Brownsville, Texas. Reports say he became ill and began vomiting; witnesses claim he was left near a farm where cows could be heard. There are unconfirmed sightings placing him later in Sarita, Texas, which has complicated the search.

At disappearance Santos was described as Hispanic with gray hair, about 5 feet 7 inches to 5 feet 9 inches and between 100 and 300 pounds. He was last seen wearing jeans and tennis shoes and was believed to be carrying a piece of paper with a Florida area code phone number. No trace of him has been found since that day and authorities have suggested he may have succumbed to the elements, though no definitive evidence confirms his fate.

Anyone who saw Santos in January 2006, or who has information about his movements through Brownsville or Sarita, is asked to come forward.