Sebastian Lucas Conklin was five years old when he disappeared on December 3, 2011, in Hallandale Beach, Florida. He is biracial (White and Hispanic), with brown hair and brown eyes, and a distinctive birthmark on his left calf. His three-year-old sister, Briana Nikki Conklin, went missing with him the same day.

Authorities treated this as a parental kidnapping and issued a felony warrant for the children’s non-custodial mother, Marcela Conklin, on December 5, 2011. Marcela was described as a 30-year-old Hispanic female with brown hair and brown eyes. Fairfax County Police Department is handling the case, and investigators have pursued leads that the family may have left the country. Information has suggested the children and their mother might be in Cochabamba, Bolivia.

The search remains unresolved and international in scope. If anyone has information about Sebastian, Briana, or Marcela Conklin’s whereabouts around or after December 2011, please share what is known with investigators.