World Rugby investigates alleged racist abuse by Mbonambi

"World Rugby takes all allegations of discriminatory behaviour extremely seriously," a statement read.

South Africa's Bongi Mbonambi during a training session at Stade des Fauvettes. Photo credit David Davies/PA Wire.

World Rugby has opened an investigation into the alleged racist slur directed at England flanker Tom Curry by South Africa hooker Mbongeni Mbonambi in Saturday's World Cup semi-final.

Curry claimed to referee Ben O'Keeffe in the second quarter of the Stade de France clash that he had been called a "white c***" by Mbonambi.