(CNN) -- A man known for his grand 6 million-light Christmas display was found shot and killed in his home on Friday morning. A family member found John Chakalos, 87, in his home in Windsor, Connecticut, according a Windsor police department press release. The medical examiner's office ruled that Chakalos died of a gunshot wound to the head. The police are conducting an active homicide investigation, based on the condition of the body when it was found and because police did not recover a weapon at the scene, Windsor police Capt. Tom Lepore said. Windsor police were first to arrive...