A 46-year-old man was sentenced to life in prison on Monday after shooting dead a father and son because they were related to a driver who killed his nine-year-old sister in a crash 45 years ago. Alfred Guy Vuozzo swore loudly as he was told he would not be eligible for parole for 35 years for murdering Brent McGuigan, 68, and his son, Brendon, 39, on Prince Edward Island last August. As he was escorted from the courtroom, he screamed: 'You've sentenced me to life and I sent them to death', while the judge called the brutal double-murder an act of 'hatred and misdirected vengeance'. Vuozzo was two years old when his older sister, Cathy, was killed in a crash in 1970. Brent's father, Herbert, who was behind the wheel, later received a nine-month sentence for dangerous driving. Scroll down for video . 'Revenge': Alfred Guy Vuozzo, 46, has been sentenced to life in prison after shooting dead Brent McGuigan, 68, and his son, Brendon (both pictured), 39, because they were related to a driver who killed his nine-year-old sister in a crash 45 years ago. The defendant was told that he will not be eligible for parole for 35 years . Crash: Vuozzo was two years old when his older sister, Cathy, was killed in a crash in 1970. Brent's father, Herbert, who was behind the wheel, received a nine-month sentence. Above, a newspaper photo of the crash . After more than 40 years of torment, Vuozzo confronted the driver's son, Brent, and grandson, Brendon, in their home on St Mary's Road, near the town of Montague, CTV News reported. He shot them both in 'execution-style' killings to avenge his sister's death - despite neither victim having had anything to do with the crash that had claimed the life of his sibling all those years ago. In February, Vuozzo pleaded guilty to the first-degree murder of Brent and the second-degree murder of Brendon. At the time, he told the court that when Cathy was killed, 'Our lives were ruined'. He added he had needed to do something for her. 'Call me a cold-blooded killer, but I'm not,' he said. Before his sentencing on Monday, Vuozzo said Herbert's 'short' sentence 'has haunted me all my life', saying: 'That's all her life was worth. She only had nine years in this world. And nobody cared.' Shooting: After more than 40 years of torment, Vuozzo confronted the driver's son, Brent, and grandson, Brendon, in their home near Montague, Prince Edward Island, and shot them. Above, police at the scene . Emergency vehicle: He killed both in 'execution-style' slayings to avenge his sister's death - despite neither victim having had anything to do with the car crash that claimed the life of his sibling all those years ago . However, Crown lawyer John Diamond told the provincial Supreme Court in Charlottetown that Vuozzo was a 'cold-hearted' murderer who had shot his victims with a handgun to get 'revenge'. 'It was revenge. He was a cold-hearted and calculated individual,' he told the court, CBC reported. Mr Diamond also called the double-murder on August 20 'callous', 'pointless', and the worst crime in the Island's history, adding that it has caused life-long pain for surviving McGuigan family members. In a victim impact statement, Brent's wife and Brendon's mother, Marie McGuigan, who was home at the time but was not targeted by a hell-bent Vuozzo, said 'a part of me died with them that night'. Attack: In February, Vuozzo pleaded guilty to the first-degree murder of Brent and the second-degree murder of Brendon. He said that when Cathy was killed, 'Our lives were ruined'. Above, the scene of the killings . Meanwhile, Brent's only daughter, Donna, said she has been consumed by hatred. 'I feel so much anger and hatred that it scares me. I hate that they died this way and it haunts me,' she sobbed. At an earlier hearing, Gerald Quinn, prosecuting, explained how Cathy had been fatally thrown from a car being driven by her father when it was struck by Mr McGuigan, who was driving a truck, in 1970. The youngster's father and two other children also received minor injuries in the crash, but Herbert was not injured, The Eastern Graphic reported. Cathy died on the scene near Commercial Road. Mr McGuigan has since passed away. Referring to Brent and Brendon, Quinn said: 'These two men, by all accounts, were good hard-working men, had no involvement whatsoever in the motor vehicle accident years ago, at all. He added: 'This gentlemen [Vuozzo] had no familiarity with them other than knowing who they were. He walked into the home and he shot them both multiple times and killed them.' Thane MacEachern, defending, argued that the defendant had no previous criminal record and had suffered from depression and mental illness prior to the shootings, according to CBC. Vuozzo, of Lower Montague, will be 81 by the time he is eligible for parole. The first 25 years' ineligibility are for his first-degree murder charge, while the other 10 years are for killing Brendon. In 2011, federal legislation was passed allowing courts to impose consecutive periods of parole ineligibility in cases where defendants have been convicted of multiple murders.
Alfred Guy Vuozzo, 46, shot dead Brent McGuigan and his son, Brendon . He carried out shooting last August to avenge nine-year-old sister, Cathy . Cathy was killed  in a car smash involving Brent's father, Herbert, in 1970 . Herbert given nine-month sentence for dangerous driving; has since died . Vuozzo, from Prince Edward Island, said the sentence had 'haunted' him . Knew victims, who lived near Montague, were not involved in fatal crash . Defendant pleaded guilty to first- and second-degree murder in February . He was jailed for life on Monday; he is not eligible for parole for 35 years .