World Rugby has confirmed it will formally review the alleged use of a racial slur by South Africa hooker Bongi Mbonambi towards England’s Tom Curry.
Curry approached referee Ben O’Keeffe to report the comment half an hour into the Springboks’ Rugby World Cup semi-final victory.
If banned, Mbonambi could miss the final against New Zealand on Saturday.
World Rugby said it will take the allegation “extremely seriously”.
The governing body confirmed it will make no further comment on the incident until the conclusion of its review process.
England flanker Curry was asked after the match whether something untoward had been said to him by Mbonambi.
“Yeah,” he replied, before adding that “it does not need to be talked about”.