An investigation is underway after a car seat with a 21month old baby boy in it fell out of a moving vehicle in Lumberton last night. The mother of the child was making a lefthand turn off of Highway 96 onto West Chance Cutoff when a door opened and the car seat fell out of the moving vehicle. The baby suffered a head injury. Two other children ages one and three were in the vehicle. CPS is assisting Lumberton police in the investigation.