John's photo is shown age-progressed to 13 years and Kristina's photo is shown age-progressed to 14 years. The children and their mother, Van Nguyen, were last seen on April 18, 2002. They were traveling in a green 1997 Nissan Pathfinder with Ohio license plates ADH7739. John's nickname is Tai. Kristina's ears are pierced and her nickname is Hang. While the children and mother were last seen in Rising Sun, Indiana, Delhi Township Police Department in Ohio is interested in their whereabouts.