Officers caught up with the suspect and are thankful the baby is okay.
It happened near 27th Avenue and McDowell.
The parents were filling up their car at an AM/PM gas station, but left the key and his child in the car.
The carjacker took the car and sped away as an Arizona DPS officer was nearby.
That officer chased the suspect and took him into custody.
The baby was reunited with the parent and is fine.