A Melbourne man has been sentenced for the murder of his neighbour following a plea of guilty. The crime occurred when the man was experiencing a drug-induced psychotic state. His son fled to the neighbour’s home seeking help, triggering a violent confrontation. The neighbour was fatally stabbed during the ensuing attack. The court heard the man was in the grip of a “frenzy” at the time of the murder. The sentencing marks the culmination of the investigation into the tragic incident in Melbourne's outer-east.