Oakland A’s broadcaster Glen Kuiper was suspended by NBC Sports Bay Area on Saturday after he uttered a racial slur during Friday night’s game between the A’s and Royals. 

The network said in a statement Saturday that Kuiper will remain off the air until it can complete a review of what transpired on Friday’s broadcast.

Kuiper issued an apology on-air Friday and released a statement through NBCSBA Saturday.

“I could not be more sorry and horrified by what I said,” Kuiper said in the statement. “I hope you will accept my sincerest apologies.”

The A’s released a statement regarding the incident after the game on Friday night.

“The language used by Glen Kuiper during today’s pregame broadcast is unacceptable,” the statement read. “The Oakland Athletics do not condone such language. We are working to address the situation.”

Kuiper used the slur when talking about his visit to the Negro Leagues Baseball Museum with broadcast partner Dallas Braden during the pregame show. 

Bob Kendrick, president of the Negro Leagues Baseball Museum, issued a statement in response on Saturday afternoon.

“I’m aware of the unfortunate slur made by Glen Kuiper,” Kendrick said. “I welcomed Glen to the NLBM yesterday and know he was genuinely excited to be here. The word is painful and has no place in our society. And while I don’t pretend to know Glen’s heart, I do know that my heart is one of forgiveness. I hope all of you will find it in yourselves to do the same!”

Kuiper has been Oakland’s play-by-play announcer since 2006.