Troubled son accused of killing retired detective dad in Long Island home confessed to murder: prosecutors

The troubled son accused of killing his retired detective dad inside their Long Island home chillingly confessed to the grisly slaying — telling cops he blasted his father in the head to “finish him off,” prosecutors revealed Thursday.  Christopher Miller, 43, pleaded not guilty for reasons of insanity in a Suffolk County courtroom Thursday for allegedly fatally shooting his dad, retired Suffolk County Police Department detective John Miller, 75, during an argument inside their home Wednesday morning. When police questioned the younger Miller, he said “he shot his father four times with a shotgun before driving the pointed end of the weapon into his head to finish him off,” according to a criminal complaint. The deadly clash unfolded inside the Dix Hills home hours after John Miller reported his son missing.Christopher Miller was hospitalized Monday after fighting with a motorist during a crash and his father grew worried when he didn’t hear from him, leading him to file a missing person report, News 12 reported.The dad picked him up at the hospital Tuesday — and the accused psycho son laid out a shotgun and AR-15 on his bed before opening fire hours later, prosecutors said in court, according to the station. After the killing, Miller ran from the home and hid in a neighbor’s shed. The eagle-eyed homeowner spotted him and called police.Cops then brought him to his home, where they discovered the former detective in a pool of blood. The 43-year-old — who recently moved into his father’s home after going through a divorce — tried to run but was tackled by a cop, the outlet said.A bruised-up Miller ignored reporters as he was led to his arraignment Thursday morning. He pleaded not guilty to murder charges and told Judge Eric Sachs he wanted a different lawyer, according to News12. Miller was held without bail. His appointed lawyer Dan Russo told reporters “he’s going through something traumatic” outside the courthouse. “I d...