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OTRC: Sharon Osbourne leaving 'America's Got Talent'? (Poll)

Sharon Osbourne appears in an episode of NBC's 'America's Got Talent' in 2012. (Virginia Sherwood / NBC)

Is Sharon Osbourne leaving "America's Got Talent"?

The 59-year-old wife of rocker Ozzy Osbourne has served as a judge on the NBC competition series since its second season, which premiered in 2007. On Tuesday, a cryptic Tweet was posted on her Twitter page and read: "My darling @HowardStern, money is not the reason I'm not returning to @nbcagt, it's because..."

She did not elaborate and her rep had no immediate comment. On Wednesday, she was absent from the CBS show "The Talk," where she serves as a co-host. Singer Gladys Knight filled in for her.

Howard Stern, a shock jock known for his X-rated radio show, made his debut as an "America's Got Talent" judge at the start of the current seventh season. His program's Twitter page had on Monday featured the following Tweet: "#AGT update: @HowardStern isn't sure if he'll do another season and says Sharon Osbourne may not come back unless she gets more money #H100."

Sharon's Tweet was unexpected, NBC Entertainment Chairman Robert Greenblatt said at a network panel discussion before members of the Television Critics Association on Tuesday, according to the Associated Press.

"This is coming out of context and sort of spontaneously, and we don't even know what's going on," he said. "And it's probably much ado about nothing."

Sharon has recently been dealing with some family turmoil - her and Ozzy's son Jack revealed in June that he had been diagnosed with multiple sclerosis.

Stern has not addressed Sharon's cryptic Tweet personally and also did not talk about the issue on his Sirius XM satellite radio show on Wednesday either, as a repeat program from 2007 aired instead. NBC had moved the filming location of the final live shows of "America's Got Talent," which are currently airing, from Los Angeles to New York to accommodate him.

Stern had reportedly signed a one-year contract to join "America's Got Talent." His rep had no immediate comment about whether or not Stern would return to the show for another season. The show is set to go on hiatus during the Summer Olympics, which will air on NBC in the United States, and return for its finale in late August.

Sharon later Tweeted on Wednesday: "Last AGT tonite b4 Olympic break. Looking forward to time off but will be counting the days until I see my AGT fam again whom I love & adore."

Auditions for season 8 of "America's Got Talent" are set to begin in the fall. Howie Mandel, the show's third judge, is expected to return, source told OnTheRedCarpet.com. His spokesperson declined to comment about the matter.

"America's Got Talent" premiered in 2006 with host Regis Philbin, who was replaced by Jerry Springer in season 2. Nick Cannon took over his duties a year later. The original judges were singer Brandy, who left after one season, David Hasselhoff, who departed the show after season 4, and Piers Morgan, who Stern had replaced.

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