Racist remarks purportedly uttered by Los Angeles Clippers owner Donald Sterling have sparked an NBA investigation and retired superstar Magic Johnson called them “a black eye for the league” on Saturday.

The uproar began when TMZ’s website provided audio it claimed came from an April 9 argument between Sterling and his girlfriend V Stiviano, with Sterling upset she posted a photograph with Johnson on Instagram.

“It bothers me a lot that you want to broadcast that you are associating with black people. Do you have to?” Sterling allegedly said.

“You can sleep with (black people). You can bring them in. You can do whatever you want. The little I ask is not to promote it on that … and not to bring them to my games.

“In your lousy … Instagrams you don’t have to have yourself walking with black people.”

The NBA has started an investigation into the remarks, league 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,” Bass said.

The Clippers lead the Golden State Warriors two games to one in a best-of-seven first-round playoff series that continues on Sunday.

Johnson, a legend for the Los Angeles Lakers in his playing days, reacted on Twitter vowing that he and his wife Cookie would never attend another Clippers game.

“TMZ reported this morning that Clippers owner Donald Sterling doesn’t want me or other African-Americans to come to Clippers games,” Johnson posted on Twitter.

“Cookie and I will never go to a Clippers game again as long as Donald Sterling is the owner.

“I feel sorry for my friends coach Doc Rivers and Chris Paul that they have to work for a man that feels that way about African Americans.

“LA Clippers owner Donald Sterling’s comments about African Americans are a black eye for the NBA.”

Sterling, who has owned the Clippers since 1981, has had such feelings for a long time, according to a tweet from former Clipper standout Baron Davis.

“That’s the way it is… He is honest about what he believes in.. Been going on for a long time, Hats off 2 the Team.. 4 playin above it all,” Davis wrote.

The Clippers have not gone past the first round of the playoffs under Sterling.