Sharon Osbourne leaving "America's Got Talent"?

NEWARK, NJ - JULY 18: TV Personality Sharon Osbourne is interviewed during an "America's Got Talent" Post Show Red Carpet New at Jersey Performing Arts Center on July 18, 2012 in Newark, New Jersey. (Photo by Michael Loccisano/Getty Images)
Michael Loccisano
Sharon Osbourne is interviewed during an "America's Got Talent" post show red carpet on July 18, 2012, in Newark, N.J.

(CBS/AP) Sharon Osbourne gave her Twitter followers a hint that she may be stepping down as a judge on NBC's reality competition "America's Got Talent."

Pictures: Celebrity TV judges

Osbourne tweeted at fellow judge Howard Stern on Tuesday saying, "money is not the reason I'm not returning" to the show. Her tweet trailed off with "it's because ...." and didn't elaborate.

NBC said Osbourne hasn't informed the network that she intends to leave "America's Got Talent," which is now airing its seventh season. The series added Stern to the judges' panel and moved from Los Angeles to New York this year to accommodate him.

Osbourne's representative did not immediately respond to a request for comment.