manhunt underway. police are pleading for the public's help. >> to me thiss one of those crimes which is unexplainable. i have never seen it before. >> a crime that's left even veteran law enforcement in shock. >> it's a terrible tragic loss. it should have never happened. >> lily garcia just 4 years old shot and killed while riding in the backseat of her family's red pickup. >> the daughter is not conscious and 4 years of age. >> new mexico investigators are calling it a classic case of apparent road rage. it happened around 3:00 tuesday afternoon on westbound interstate 40. albuquerque police say two vehicles cut each other off. a short time later shots rang out. >> from what we understand the cars were both moving, one car pulled up to the other car and started firing rounds into that vehicle. >> the deadly incident unfolding over the course of about two miles police estimate. at least one bullet striking the child. >> the caller advising his daughter is breathing. >> 24.