Oklahoma authorities are searching for an “armed and violent” suspect who allegedly kidnapped two young children this week.

The two children, an 11-year-old girl and an 11-month-old boy, were found safe shortly after the Oklahoma Highway Patrol issued an Amber Alert for them and 39-year-old Gary Underwood, KXII reported.

Underwood is the children’s biological, non-custodial father.

Investigators say Underwood may be driving an older model, maroon Monte Carlo or a blue, 1998 Chevy pickup with a Chickasaw tag reading CN26572.

Troopers did not say where or how the children were found, but KFOR reported that they were dropped off at a relative’s home 30 minutes after the Amber Alert was issued.

“That wireless alert did its job because the suspect was carrying a cell phone,” highway patrol Trooper Eric Foster said. “That alert went off. Now he knows everyone is looking for him and his vehicle and these children.”

Lighthorse Police Chief Charles Palmer told the station that Underwood allegedly pulled the mother from her car in Ada and drove off with the children and the mother’s cell phone inside.

“The mother had to call 911 from a borrowed cell phone,” said Palmer.

Lighthorse police said that Underwood has an outstanding warrant for domestic violence, KOCO reported.

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[Featured image: Gary Underwood/Ada Police Department]