England’s Joe Marler apologised to Wales prop Samson Lee for making an abusive comment during Saturday’s Six Nations match at Twickenham.
The incident took place during the first half of England’s 25-21 victory.
The Rugby Football Union said prop Marler, 25, apologised to Lee at half-time and was later “reminded of his responsibilities as an England player” by head coach Eddie Jones.
Six Nations officials are aware of the incident and establishing the facts.
The Welsh Rugby Union said in a statement: “We’re disappointed by the comment made, and pleased Joe Marler apologised to Samson and was reminded of his responsibilities as an international rugby player.”