Steven Douglas was 4 years old when he was last seen in San Pablo, California, on February 25, 2006. He and his half-sister, Angelica Valenzuela, were abducted that day by their non-custodial mother, Christina Teresa Calderon, and Angelica’s father, Luis Antonio Valenzuela. Federal warrants were issued for both adults after the abduction.

Investigators believed the family may have fled to Mexico and might have been traveling in a green Ford Aerostar with California license plates. Steven was reported as 4 feet 3 inches tall and about 75 pounds at the time, with brown hair and brown eyes. Age-progressed images have been produced but the children have not been located.

Anyone with information on Steven’s possible whereabouts is asked to contact the San Pablo Police Department.