Sergio Martinez was 16 when he was last seen in Las Cruces, New Mexico, on July 30, 1992. He was described as a Hispanic male with brown hair and brown eyes, missing a front tooth. At the time he vanished he was wearing a maroon shirt with black stripes and gray pants.

The disappearance was reported to the Las Cruces Police Department. Early search efforts produced no significant leads; the case later grew cold and has been kept alive by missing persons organizations and the family.

Anyone who knew Sergio, remembers seeing him around Las Cruces in late July 1992, or has information that could help his family should contact the Las Cruces Police Department.