In May 2025, NBC Chicago’s investigative team, led by veteran reporter Chuck Goudie, unveiled new evidence identifying the killer of notorious Chicago mob boss Sam “Momo” Giancana, who was murdered in 1975. According to FBI interview records obtained by NBC 5 Investigates, mob hitman Nick Calabrese revealed that Tony Accardo, known as “Joe Batters” or “JB,” personally carried out the assassination. This revelation aligns with information from federal witnesses Frank Calabrese Jr. and his father, Frank Sr., suggesting that Accardo, the de facto leader of the Chicago Outfit at the time, ordered the hit due to concerns that Giancana might divulge sensitive mob secrets to a U.S. Senate committee. Despite these findings, the FBI officially considers the case unsolved, though the report sheds new light on one of Chicago’s most enduring mob mysteries.
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