Andrew Fernando Mayorga was 17 when he disappeared from San Antonio, Texas. He was last seen January 4, 2007, near the corner of Soledad and Travis Streets at about 7:30 a.m. He had been staying with a family friend described as an honorary grandfather while visiting for the holidays and was supposed to move to Louisiana to live with his grandmother, who had not yet arrived to pick him up.

Andrew left behind all his personal belongings, including identification, his Social Security card, clothes, and his pet Chihuahua. Investigators noted the family friend disposed of a computer Andrew used before the hard drive could be examined, although authorities have not named the man a suspect. The case is classified as an endangered runaway; theories mentioned include Andrew meeting someone in person or online on platforms such as MySpace and leaving voluntarily. He could still be in the San Antonio area or may have traveled to Washington, California, Florida, or Georgia.

Does anyone in San Antonio or these other states remember seeing Andrew or his Chihuahua around early January 2007?