Gaspar Milazzo and his longtime ally, Buffalo Mafia boss Stefano Magaddino had secretly, but willingly supported their allies in New York and Chicago as they opposed Joe Masseria and his supporters. By 1930, the situation had changed and both men now openly supported their allies, including Chicago Mafia boss Giuseppe Aiello, who was being opposed by a powerful Masseria ally in Chicago, Al Capone. Joe Masseria, the recognized "boss of bosses" was incensed by the disrespect Milazzo and Magaddino where showing him by supporting his enemies and soon Masseria decided Milazzo and Magaddino, both powerful and influential mafiosi must be eliminated.