(AP) Soprano Anna Netrebko, once among the Metropolitan Opera’s biggest box office draws, sued the company and general manager Peter Gelb on Friday, alleging defamation, breach of contract and other violations related to the institution’s decision to drop her following Russia’s invasion of Ukraine.

The suit, filed in U.S. District Court in Manhattan, asks for at least $360,000 in damages for lost performance and rehearsal fees. Netrebko claims the Met caused ”severe mental anguish and emotional distress” that included “depression, humiliation, embarrassment, stress and anxiety, and emotional pain and suffering.”

The Met dropped the Russian soprano from future engagements shortly after Russia invaded Ukraine in February 2022. Gelb had demanded she repudiate Russia President President Vladimir Putin.

“Since Russia’s invasion of Ukraine, the Met and Peter Gelb have used Anna Netrebko as a scapegoat in their campaign to distance themselves from Russia and to support Ukraine,” the management of the 51-year-old soprano said in a statement.

The Met said in a statement: “Ms. Netrebko’s lawsuit has no merit.”

The American Guild of Musical Artists filed a grievance on Netrebko’s behalf and arbitrator Howard C. Edelman ruled in February that the Met violated the union’s collective bargaining agreement when it canceled deals with Netrebko to appear in Verdi’s “Don Carlo” and “La Forza del Destino” and Giordano’s ”Andrea Chénier.” He awarded her compensation for the lost performances, which the union calculated at $209,103.48.

Netrebko, who made her Met debut in 2002, was due to receive the Met’s top fee of $17,000 per performance, the suit said.

Edelman’s decision said Netrebko voluntarily withdrew from performances of Wagner’s “Lohengrin” and Puccini’s “Turandot” and was not owed for those.

The lawsuit alleges breach of additional agreements for 40 performances of Puccini’s “Tosca” and Tchaikovsky’s “Pique Dame (The Queen of Spades”)” during the 2024-25 season and Puccini’s “Manon Lescaut” and Verdi’s “Macbeth” in 2025-26. Going beyond the scope of the arbitration, the suit claims Netrebko was discriminated against because of national origin.

Netrebko alleges the Met and Gelb “harmed Netrebko’s relationship among audiences, including by encouraging protests against her performances” and “reputation caused by Gelb and the Met has caused other opera houses and cultural institutions in the United States to refrain from hiring Netrebko.” It said Netrebko was forced to sell her New York City apartment at a loss.

The suit said “due to the Met’s requirement that Netrebko issue public statements opposing the actions of Russian government, Russian politicians have denounced Netrebko, Russian theater companies have canceled contracts with her, Russian audiences have criticized her on her social media channels and in the Russian press, and Netrebko and her family and friends in Russia have suffered the risk of harm, retaliation, and retribution by the Russian government.”

Russian soprano Anna Netrebko (as ‘Adina’) performs during the final dress rehearsal of John Copley’s production of ‘L’Elisir d’Amore’ by Gaetano Donizetti at the Metropolitan Opera House in New York City on April 2, 2007. (Jack Vartoogian/Getty Images)

While absent from the U.S., Netrebko opened the 100th anniversary season of Italy’s Arena di Verona in June with a new production of Verdi’s “Aida.”

She is scheduled to appear this month at the Teatro Colon in Buenos Aires, Argentina, and her 2023-24 season includes engagements with Berlin’s Staatsoper unter den Linden, the Vienna State Opera, Milan’s Teatro alla Scala and the Paris Opéra.