Eventually the continued violence between the two groups caused Milazzo and Magaddino to flee New York City in 1921 after they were sought for questioning in connection with the murder of a Buccellato clan member after the man they allegedly contracted to do the hit began to co-operate with authorities. Magaddino fled to Buffalo, New York, while Milazzo managed to make his way to Detroit, where both mafiosi used their high level positions within the "Castellammarese Mafia" and their connections to other powerful and influential Mafia leaders in New York, Chicago, Philadelphia and Eastern Pennsylvania to assist them in organizing their own crime families. In fact, the relocation of Milazzo and Magaddino and their establishment of powerful East coast Mafia families would play a big role in the eventual unification of the American Mafia, known to its members as La Cosa Nostra or "This Thing of Ours".