Carlos Manuel Pina was 3 years old when he was last seen on September 13, 2006, in Pacoima, California. He disappeared along with his younger sister Briza, 2, and two older siblings, Dana, 7, and Karla, 10, under circumstances that authorities called suspicious.

Investigators classified the incident as a family abduction. Authorities believe the non-custodial mother took the children to Mexico and that they have likely been living there since the disappearance. The case was handled under the Hague Convention on the Civil Aspects of International Child Abduction and remains unresolved.

Anyone who knew the children or has information about their whereabouts is asked to come forward.