Bristol Bears tighthead prop Kyle Sinckler will appear before an online independent disciplinary panel on Tuesday.
Sinckler was cited by independent citing commissioner Duncan Bell after Bristol's 20-7 win at Exeter on Saturday took the Bears top of the Premiership.
The 27-year-old has been cited for “failing to respect the authority of the match official, contrary to World Rugby Law 9.28”, after appearing to use profanity when questioning a decision made by referee Karl Dickson, a former teammate of Sinckler's from their time at Harlequins.
Sinckler took to Twitter following the comment he directed at Dickson, saying: “Want to apologise for my reaction today. Not the example I want to be setting.
“Heat of the moment stuff. Will make a conscious effort to improve. My bad.”
The independent disciplinary panel will be chaired by Richard Whittam QC, with Becky Essex and one other panel member to be confirmed.
A low-end infringment carries a two-week ban for such a case as Sinckler's.
