On the morning of 14 February, McGurn lured Moran and his men to a warehouse on Clark street. The bait was a stolen of whisky they could buy cheap. Seven of Moran's men were there to inspect the load. A police car pulled up outside the building and several of Capone's men dressed in Chicago police uniforms went in and pretended to arrest Moran's men. When they were lined up against a wall when the killers pulled out Thompson submachine guns and opened fire. Six of the seven men were killed. Moran himself was just arriving when he saw the police car and escaped without notice.