LaMotta, known for a legendary six-fight rivalry with Sugar Ray Robinson, passed away on Tuesday, his daughter Christi LaMotta said on Facebook.
Sports Illustrated said he died from complications from pneumonia.
In a career spanning 1941 to 1954, LaMotta racked up a record of 83 victories, 30 of them knockouts, against 19 defeats, according to BoxRec, which keeps boxing statistics.
On June 16,
LaMotta's turmoil-filled life -- marked by a fixed match he deliberately lost under Mafia pressure in 1947 -- was depicted in the 1980 movie "Raging Bull, in which he was portrayed in an Academy Award-winning performance by Robert De Niro.
"I'm proud that my Father was a great athlete, he lost his title to one of the best Middleweight Boxers in history, Sugar Ray Robinson," his daughter wrote on Facebook.
"When he took a dive during the Billy Fox fight, which he didn't want to do, it literally broke him & was never the same