Clippers Owner Donald Sterling alleged recording.
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AP
Donald Sterling and V. Stiviano, left, at a basketball game. Photo by AP

American basketball officials are reviewing an audio recording posted online of Los Angeles Clippers owner Donald Sterling allegedly telling his girlfriend not to post photographs of herself with black people and not to bring African-Americans to Clippers games, a league spokesman said on Saturday.

Celebrity news site TMZ.com published the 10-minute recording on its website late on Friday, describing it as a taped conversation between the Jewish billionaire Sterling and a model who goes by the name of V. Stiviano.

The recording was sharply criticized by civil rights leader Jesse Jackson, who told TMZ the Clippers' roster of mostly African-American players should protest the disparaging comments. Clippers all-star player Chris Paul called the tape "a very serious issue."

It was not immediately clear when and how the conversation was recorded.

"We are in the process of conducting a full investigation into the audio recording obtained by TMZ," National Basketball Association spokesman Mike Bass said in a statement. "The remarks heard on the recording are disturbing and offensive, but at this time we have no further information."

Clippers president Andy Roeser issued a statement on Saturday saying they have listened to the tape on TMZ.

"We do not know if it is legitimate or it has been altered. We do know that the woman on the tape - who we believe released it to TMZ - is the defendant in a lawsuit brought by the Sterling family," the statement said. "Mr. Sterling is emphatic that what is reflected on that recording is not consistent with, nor does it reflect his views, beliefs or feelings."

The tape appears to be an argument over photos Stiviano posted to the social networking website Instagram.

"People call you and tell you that I have black people on my Instagram. And it bothers you," Stiviano says, according to a version of the tape at TMZ.com. In the tape, Stiviano says she herself is of Latino and black heritage.

"Yeah, it bothers me a lot that you want to promo ... broadcast that you're associating with black people. Do you have to?" Sterling says on the tape, according to TMZ.

At another point, Stiviano says he does not want her to bring black people to basketball games, and tells him: "I'm sorry that you're still racist in your heart."

Sterling, who made his fortune in real estate, has faced allegations of discriminatory conduct in the past. In 2009, he paid $2.7 million to settle a case brought by the U.S. Justice Department which accused him of housing discrimination against blacks and Hispanics.