Retired professional boxer Jake LaMotta — more commonly known by his nickname “The Bronx Bull” and “The Raging Bull” — is currently facing a lawsuit from MGM Studios, saying that the former boxer green-lit a sequel without their permission.

According to reports, MGM Studios — the studio behind the 1980 classic film “Raging Bull” where Robert De Niro played the character of Jake LaMotta — filed the lawsuit against the producers of Raging bull II and Jake himself on Tuesday, July 3 at Los Angeles County Superior Court. MGM Studios claim that they acquired the rights to produce a movie based on a book Jake LaMotta co-wrote in 1986 as a sequel to the 1980 hit movie “Raging Bull.” Now, the studio honchos are saying that LaMotta went behind their back and shot a “low-budget B movie” that is terrible, it threatens the “integrity and value” of the original one.

MGM Studios want a judge to block the release of the new film. They are also demanding for unspecified damages.

Raging Bull II is currently filming in Los Angeles and stars William Forsythe as an older Jake LaMotta, while Mojean Aria plays the boxer as a young man.