HAYWARD, Calif., July 1, 2026, The Hayward Police Department is requesting the public's assistance

HAYWARD, Calif., July 1, 2026, The Hayward Police Department is requesting the public's assistance in locating 3-month-old Maxence Sirois, who is the subject of an AMBER Alert.

Maxence was last seen on June 28, 2026, at approximately 1:00 p.m. He is a 3-month-old male with a bald head, blue eyes, weighs approximately 16 pounds, and was wearing unknown clothing.

The suspect is Maxence's mother, 42-year-old Marina Kazakova. Kazakova is approximately 5 feet 6 inches tall, weighs approximately 128 pounds, has brown hair and brown eyes, and was last seen wearing a black shirt and blue jeans.

Kazakova failed to return Maxence to his father as required by a court-ordered custody agreement on June 30, 2026, and is believed to have fled to an unknown location.

Kazakova is believed to be driving a white 2016 Mazda CX-5 SUV displaying California license plate 7SJW989. The vehicle was last seen in the Kern County area.

If you see Maxence Sirois, Marina Kazakova, or the vehicle, call 911 immediately. Do not approach the suspect.

Anyone with information regarding their whereabouts is asked to contact the Hayward Police Department at 510-293-7000 and reference report number 2026-035385.

The Hayward Police Department appreciates the public's assistance in sharing this information to help safely locate Maxence Sirois.