From here Teenager jailed for killing Matthew Stanley at party A youth has been jailed for a fatal punch which killed teenager Matthew Stanley at a high school party in Brisbane last year. The youth, who cannot be identified, was jailed for five years, with a minimum of two-and-a-half years, after pleading guilty to manslaughter in the Brisbane Supreme Court. With 418 days in custody taken into account, the teenager is likely to be freed in early 2009. He was sentenced under the Juvenile Justice Act which has a maximum penalty for manslaughter of 10 years. Though 17 now, the youth was 16 and a juvenile when he fatally punched Matthew, 15, at a party in Alexandra Hills in September last year. "A young life was snuffed out after one punch ... leaving a family to grieve forever," Justice Roslyn Atkinson said in her sentencing remarks. "Nothing the criminal justice system can do can bring back their son. "Young people must learn that one punch can kill ... and ruin so many lives. People need to wake the f*ck up and realise that a moment of insanity can ruin many lives.