David Alexander Marko was 3 years old when he was last seen in Burbank, California, on April 17, 1993. The case is recorded as an abduction by his non-custodial mother, Norma Alicia Marko, who was 34 at the time and later became the subject of a federal arrest warrant issued in February 1994 for unlawful flight to avoid prosecution.

Investigators believe Norma may have taken David to Mexico and that she could have traveled between Mexico and Texas, with particular attention paid to border areas such as Laredo. Norma has used multiple aliases — Diaz, Garcia, and Limon — and is described as having a brown birthmark under her left breast. David has a distinctive birthmark on the inside of his left thigh that could aid identification. Age-progressed images of both have been circulated but the pair remain missing.

The Burbank Police Department and the FBI continue to seek information. If anyone has tips about David’s or Norma’s whereabouts or remembers seeing them near the border, please come forward.