Binyu Chin, known also as William, was 4 years old when he and his 7-year-old brother Huaiyu Samuel Chin were last seen in San Diego on January 12, 2019. The boys were with their noncustodial father, Foong Lian Chin, for a scheduled weekend visitation; they were not returned the next day and the father’s apartment was found emptied. Binyu was described then as an Asian male, 3 feet tall, 35 pounds, with brown hair and brown eyes.

A felony kidnapping warrant for Foong Chin was issued May 2, 2019. Investigators have said he owned property in Tijuana and was familiar with the area, and there has been speculation he could have gone to Mexico or Singapore. The U.S. Marshals Service is involved and a reward is being offered; age-progressed images of the boys have been released.

If anyone has information about the boys, their father’s whereabouts, or recalls seeing them in late January 2019, please come forward with what was seen or reported.