The NBA is now investigating these racist comments, ESPN reports.
Sterling told Stiviano, who is Mexican and black, to not publicly show her admiration of other minorities. He told her not even bring Magic Johnson to one of the Clippers games.
"It bothers me a lot that you want to broadcast that you're associating with black people. Do you have to?" he said in the audio recording. "You can sleep with [black people]. You can bring them in, you can do whatever you want. The little I ask you is not to promote it on that ... and not to bring them to my games."
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NBA spokesman Mike Bass talked about Sterling's comments in a statement.
"We are in the process of conducting a full investigation into the audio recording obtained by TMZ. The remarks heard on the recording are disturbing and offensive, but at this time we have no further information."
The Clippers have not yet released a statement on the matter.