 However, the existence of these assassins was never substantiated, and some researchers have suggested that the tip about the contract was false, intended to confuse or misdirect federal investigators.After the Treasury Department finally got all the evidence they needed to put an end to Capone, in March and June 1931 a grand jury met in court to decide his fate.The result was that Capone was indicted on 23 counts of tax evasion of over $250,000 of income from 1924 to 1929.