The three children were having a supervised visit with their biological mother.
Police are searching for 30-year-old Damaris Amesquita and her husband 27-year-old Jose Amesquita.
Damaris Amequita is Hispanic, approximately 5' 6" tall and 250 lbs., with black hair and brown eyes. She was last seen wearing a gray T-shirt and blue jeans. Jose Amesquita is Hispanic, approximately 5' 8" tall and 150 lbs., with black hair and brown eyes. He was last seen wearing a black shirt and blue pants.
Authorities believe they're in a green 2000 Land Rover with license plate number 5GKJ367.
While this is no longer considered an amber alert, the freeway signs are up around Southern California with a description of the vehicle.