MIDWEST CITY, Okla. (KFOR) — The Oklahoma Highway Patrol has issued an Endangered Missing Advisory for a missing 2-year-old boy.

According to OHP, 2-year-old Anthony Stroder is believed to be with his non-custodial mother, Katelyn Thornton, and her boyfriend, Aurelio Cardenas.

Authorities say Cardenas is a registered sex offender according to the Texas Public Sex Offender Registry.

OHP says they could be in Oklahoma or the Texas Panhandle. They are driving a 2011 GMC Acadia with Oklahoma tag PCU102.

Stroder is approximately 3 feet tall, 27 pounds with blond hair and blue eyes.

Thornton is 22-years-old, approximately 5-foot-6 inches tall, and 240 pounds with brown hair and brown eyes.

Cardenas is 26-years-old, approximately 5-foot-6 inches tall, and 145 pounds with brown hair and brown eyes.

If seen, call 911.