Bond was set Thursday in Akron Municipal Court for 48-year-old Terrance Allen of Akron. He's also charged with felony child endangering, evidence tampering and a weapons count in Jamarcus Allen's death Wednesday.
The father flagged down a Summit County deputy, who found the boy in the family car with a gunshot wound to his head. The child died at Akron Children's Hospital.
Police recovered a handgun from the car. Police are trying to determine if the boy got a hold of the weapon or was shot by someone else.
Court records don't show an attorney representing Allen. He is being held in jail.