Police are investigating the possibility that a man who left his son in a hot car for seven hours may have intentionally killed him. Cooper Harris died tragically after he was left alone in the car during the day while his father was in work. According to the Daily Mail, the police now suspect that there may in fact be more to the case and are investigating the matter further. "Much has changed about the circumstances leading up to the death of this 22-month-old since it was first reported," Cobb County Police Sgt. Dana Pierce told CNN. "I've been in law enforcement for 34 years. What I know about this case shocks my conscience as a police officer, a father and a grandfather." Police now claim that Harris' story has changed since the first responders arrived on the scene: "Within moments of the first responders getting to the scene and doing their job and questions began to be asked about the moments that led up to their arrival at the scene, some of those answers were not making sense to the first responders," Pierce said. However, ominously Pierce added: "I cannot confirm that the child, as originally reported, was in the car at 9am." Since the incident, Harris has been charged with felony murder and cruelty to children. He has pleaded not guilty to the charges. Harris was originally meant to drop Cooper off at a day care centre but forgot. He only discovered the lifeless child on the way home from work and desperately tried to resuscitate him to no avail.