Vittorio Grigolo, one of opera’s star tenors, was dismissed by the Metropolitan Opera on Thursday after he was fired by the Royal Opera in London, which found that he had engaged in “inappropriate and aggressive behavior” during a recent company tour of Japan.

The Royal Opera said that an independent investigation of the incident, which occurred in September in Tokyo, concluded that Mr. Grigolo’s “inappropriate and aggressive behavior at the curtain call and afterward fell below the standards we expect of our staff and performers.” The Royal removed him from his upcoming performances with the company, and the Met, which had suspended him after the incident, quickly followed suit.

Mr. Grigolo pre-empted the announcement of his dismissal with a post on Instagram. “I recognize that my personality can be very exuberant at times, and I am willing to make sure that what happened will not happen again in the future,” he wrote.

With his dismissal from the Royal Opera and the Met, where he had been scheduled to sing Alfredo in Verdi’s “La Traviata” this winter, Mr. Grigolo became the latest in a line of opera luminaries whose careers have been upended by allegations of misconduct and abusive behavior.