In the early hours of Tuesday, 1st October, 1915 Constable McGrath and other police went to the Trades Hall in Lygon Street, Carlton in answer to a report and a burglary was in progress.
The policemen entered the building, and found that an attempt had been made to open a safe. McGrath then confronted two offenders in a passage-way, one of whom fired a number of shots which fatally wounded the Constable. The offender was later arrested at the scene after further shots had been fired.
John Jackson, the man who fired the fatal shot, was convicted of McGrath’s murder, and was hanged at the Old Melbourne Jail. He was the last person in Victoria to be executed for the murder of a policeman.