James "Little Jimmy" Marcello, a former boss in the Chicago Outfit, has been sentenced to life in prison.
Marcello was convicted alongside other mob leaders in the massive Family Secrets trial in 2007.
Joey "The Clown" Lombardo and Frank Calabese, Sr., were convicted in the same trial and also sentenced to life.
Marcello was found responsible for the murders of Tony "The Ant" Spilotro and his brother Michael. Tony Spilotro was known as the Chicago mob's man in Las Vegas. The murders of the Spilotro brothers were the subject of the Hollywood film, "Casino."
U.S. District Judge James B. Zagel said at Marcello's Thursday sentencing that he regretted Marcello didn't lead a better life, and that he had to pay for his crimes.
Marcello declined to address the court before he was sentenced.
Former Chicago police officer Anthony Doyle is the only one of the five defendants convicted at the trial who still must be sentenced.
The star witness in the trial, Nicholas Calabrese -- Frank's brother -- will be sentenced on Feb. 23.