England have until Monday morning to lodge a complaint after Tom Curry alleged he was the victim of a racist slur in Saturday’s 16-15 World Cup semi-final defeat by South Africa.

Curry drew the incident involving hooker Mbongeni Mbonambi to the attention of referee Ben O’Keeffe around the half-hour mark of the match at the Stade de France.

Although the alleged slur is not audible on the ref link, Curry’s subsequent conversation with O’Keeffe is.

“Sir, if their hooker calls me a white c***, what do I do?” the Sale flanker said.

O’Keeffe replied: “Nothing, please. I’ll be on it.”

When asked after the match if Mbonambi had said something he shouldn’t have done, Curry replied “yeah”, although he declined to reveal what was said.

Mbonambi refused to shake Curry’s hand at the end of a dramatic clash in Paris that was won by Handre Pollard’s penalty after 78 minutes.

World Rugby confirmed there is a 36-hour window from when the game ends for England to lodge a complaint to the citing officer, giving them until 10am BST on Monday to act.

The sport’s global governing body can also choose to pursue the matter with any case likely to be brought under the ‘bringing the game into disrepute’ banner.

Also, if the citing officer finds any evidence of the alleged racist remark he can trigger disciplinary proceedings against Mbonambi with an offence such as this likely to contravene law 9.12 – a player must not verbally abuse anyone.

The PA news agency has contacted South Africa for comment.