Police responded to the home on Ridgebury Road around 5:15 p.m. Friday.
Police said Sunday that officers were responding to an emergency call reporting a possible domestic incident involving John Valluzzo.Authorities say a Ridgefield police officer opened fire after the 75-year-old Valluzzo refused to obey orders to put down his handgun and instead raised the weapon toward police. He was declared dead on Friday evening at Danbury Hospital. State police are investigating the circumstances surrounding at the request of the Danbury state's attorney and Ridgefield police chief. The identity of the Ridgefield officer involved has not been released.
The officer was not injured at the scene but was taken to Danbury Hospital where he was treated and released.