Leon Castellanos was eight months old when he was last seen in Marina Del Rey, California, on October 24, 2018. Born February 26, 2018, he is described as biracial with light brown hair and brown eyes. Authorities believe he may be with his non-custodial mother, Olga Mishchenko.

A felony kidnapping warrant for Mishchenko was issued November 9, 2018. Investigators believe the two may have traveled to Russia. Leon may be using the name Alexander Mishchenko, and his mother may be using the last name Castellanos. There is concern he may need medical attention. The Los Angeles County Sheriff’s Department is investigating and the National Center for Missing and Exploited Children has circulated an age-progressed image of him.

Anyone who has information about Leon Castellanos or Olga Mishchenko is asked to contact law enforcement.