7 men associated with the George “bugs” Morgan gang were murdered by assailants dressed as police, believed to be related to Al Capone’s gang. The massacre was at a garage north side of the city. 

At 10:00 am a black Cadillac similar to those driven by police officers pulled up to the commercial garage. Two of the men were dressed as police and as a guise of a raid made the 7 men line up to the wall. The men opened fire on the men with 2 submachine guns and a shotgun and fatally shot all 7 men.

According to EBSCO “5 of the men that were part of Morgan’s gang were Peter and Frank Gusenburg, Albert Kachelleck, Adam Heyer, Albert Weinshank. The other two were John May, a mechanic, and Reinheart Schwimner an optician and associate of the gang.”

People initially believed the shooting was set up by corrupted police officers but the suspicion soon shifted to Al Capone and his gang. Officials suspected him because of prior tensions with Morgan’s gang such as interference with capons bootlegging and dog racing. 

McGurn and John Scallise, other capone gang members, were indicted in mid march 1929 for the massacre. McGurn’s charges were dropped after his future wife provided an alibi and John Scallise was murdered before his trial.