(Reuters) — Michael Jackson's former concert promoter, AEG Live, is withdrawing a $17.5 million insurance claim in the 2009 death of the pop star amid revelations in leaked emails that show company executives were concerned about his stability ahead of his planned London comeback tour.

Attorneys involved in the case denied on Tuesday that AEG Live's move was related to the publication of the leaked emails by the Los Angeles Times on Sept. 2.

Jackson died in June 2009 at age 50 from an overdose of the powerful anesthetic propofol and sedatives. Last year, a Los Angeles jury convicted the "Thriller" singer's physician, Conrad Murray, of involuntary manslaughter, but heard that Mr. Jackson was taking a cocktail of sleep aids and prescription medications.

AEG Live, the concert division of privately-held Anschutz Entertainment Group (AEG), had filed a claim seeking a $17.5 million insurance payment from Lloyd's of London for losses they incurred in up-front costs for Mr. Jackson's "This Is It" sell-out shows that were to start in London in July 2009.

Lloyd's later filed a lawsuit against AEG Live in Los Angeles Superior Court, seeking a declaration that the insurance company did not owe the money.

Marvin Putnam, an attorney for AEG, said the company no longer needed the $17.5 million because it was reimbursed by the Jackson estate for its concert-related losses and that it informed Lloyd's in June that it was withdrawing its claim.

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Attorneys in the case told a judge on Monday that, as a result, they expected AEG Live to be dropped from the case, Mr. Putnam said. That has not yet officially happened, he said.

The insurance dispute is one of two major court cases stemming from Mr. Jackson's death.

The other is a wrongful death lawsuit filed by the "Thriller" singer's mother, Katherine Jackson, against AEG Live in which she accuses the company of being responsible for medical decisions made by Dr. Murray. That case is scheduled for trial next year.

The Los Angeles Times on Sept. 2 published portions of emails between AEG Live executives about Mr. Jackson and his well-being. In one email from March 2009, sent when the singer was in London to announce the concerts, Randy Phillips, chief executive of the concert division of AEG Live, despaired about the singer's condition.

"MJ is locked in his room drunk and despondent," Mr. Phillips said in the email, according to the Los Angeles Times. "I trying to sober him up."

While that email led to speculation that AEG Live knew about problems with Mr. Jackson while it was firming up its insurance policy with Lloyd's, Mr. Putnam said AEG's move to drop its insurance claim has "nothing to do with the recent leak" of documents containing the emails.

Attorneys for AEG have said they suspect the emails were leaked from material shared between the two sides in the wrongful death lawsuit brought by Katherine Jackson.

"We are standing by AEG's lawyers' comments that the withdrawal of the claim was not related to the leaked emails," said Paul Schriffer, an attorney for the underwriters at Lloyd's of London.