A policeman with the organized crime unit in South Africa says the arrest of a referee for match-fixing is ''just the tip of an iceberg.''

Capt. Paul Ramaloko tells The Associated Press that there will be more arrests in the second major match-fixing case in the former World Cup host country.

South African Football Association referee Clifford Malgas appeared in court on Thursday and faces charges of corruption and perjury. Ramaloko says he is accused of facilitating bribes to another referee in an attempt to fix a lower-league promotion game in 2011.

Ramaloko says Friday that his unit is also separately investigating the allegations of fixing in friendly games played by South Africa's national team in the buildup to the country's hosting of the 2010 World Cup.