Toy-gun robbery at Doncaster fast-food store misfires ARMED with a toy gun and plastic knife a man has tried to hold up a busy fast-food store in Melbourne's east. When the would-be robber demanded cash, three bystanders tackled him to the ground shortly after 9pm, police said. The incident took place on the corner of Doncaster and Wetherby roads in Doncaster. The trio held on to the thief until police arrived.