Falcon Security has suspended a manager at Sun City while it investigates the public playing of a CD containing lyrics insulting former president Nelson Mandela, the company's CEO said on Wednesday.

"Falcon understands that this incident has caused anger and upset to those that heard the song that was played without any approval from Falcon Security," CEO Ben Burger said in a statement.

"The company considers the national anthem, Nkosi Sikelela [sic], a part of our national treasure and would never condone desecrating its lyrics with any offensive and racially abusive insertions, and it deeply regrets the harm that this incident caused to those that heard a snippet of the song and those that have subsequently been offended by the news of this incident."

Burger appeared in the Mogwase District Court on Tuesday on a charge of crimen injuria and was released on R1500 bail.

In his statement issued by a public relations company, he said he had been at a staff potjiekos family day at Sun City and various CDs had been presented to be played during the event on Saturday.

He said he did not hear a 15-second snippet of the song and was not near the company stand when it was played. However, he was surrounded by police after someone complained.

He threw the CD into a dustbin and said he did not understand why he was arrested because he was innocent.

He was not aware of the CD contents

Police on Tuesday said: "It is alleged that during the competition he played a CD... containing remixed lyrics of the national anthem, and people who attended the event listened to the song Nkosi Sikelel' iAfrika, which continued to say Nelson Mandela is a kaffir."

In the meantime, Warren Alberts, manager of operations for the company, which has provided security at the international resort for the last 14 years, was suspended.

Burger said Alberts said he was not aware of the contents of the CD.

"Mr Alberts has stated in an affidavit that he was not aware of the contents of the CD, but we have chosen to suspend him whilst we fully investigate this matter and ensure that we get to the bottom of it," Burger said.

"As a company we reject outright any forms of racism, and we will do all in our power to demonstrate our commitment to a just, non-racial and equitable South Africa."

The company would co-operate with the police.

"A thorough investigation has already been initiated into this ugly incident, and once we have gotten to the bottom of this, we will issue a full statement."