Al Capone target him. His driver was found tortured and murdered, and there was an attempt on Weiss's life in the Chicago Loop. On September 20, 1926, the North Side Gang used a ploy outside the Capone headquarters at the Hawthorne Inn, aimed at drawing him to the windows. Gunmen in several cars then opened fire with Thompson submachine guns and shotguns at the windows of the first-floor restaurant. Capone was unhurt and called for a truce, but the negotiations fell through. Three weeks later, Weiss was killed outside the former O'Banion flower shop North Side headquarters. The owner of Hawthorne's restaurant
Antonio Lombardo the four-year gang war, suggesting that Capone surrender supposed Dean O'Banion assassins Albert Anselmi and John Scalise, which Capone refused. Lombardo, with the help of Capone, later became President of the Unione Siciliana in November 1925, attempting to regain control of the unstable organization as well as instituting reforms, including opening membership to non-Sicilian Italian immigrants (such as the Neapolitan Capone) and changing the organization's name to the Italo-American National Union. Lombardo's reforms, however, caused some resentment within Unione Siciliana members. With the partnership of Al Capone and New York gangster Frankie Yale worsening, possibly due to the end of