CHARLOTTE, N.C. -- LeBron James called comments on an audio recording of a man identified as Los Angeles Clippers owner Donald Sterling "appalling" and said he's not sure if he would suit up for the remainder of the NBA playoffs if he played for the Clippers.

"There's no room for Donald Sterling in the NBA -- there is no room for him," the Heat forward said Saturday night before a playoff game against the Charlotte Bobcats.

The league said Saturday it was investigating the recording posted on TMZ's website, calling the comments "disturbing and offensive."

James said NBA commissioner Adam Silver should take swift action if the comments are found to be made by Sterling.

"Obviously, if the reports are true, it's unacceptable in our league," James said. "It doesn't matter, white, black or Hispanic -- all across the races it's unacceptable. As the commissioner of our league they have to make a stand. They have to be very aggressive with it. I don't know what it will be, but we can't have that in our league.