Munster and Ireland prop James Cronin has been handed a four-week ban for stamping on the head of an opponent.
Cronin was cited for alleged foul play after appearing to tread on Jamison Gibson-Park in last Saturday's 25-14 defeat to Pro12 rivals Leinster at the Aviva Stadium.
Following a hearing on Wednesday, the 25-year-old was found to have "committed an act of foul play ... that warranted a red card".
A Munster statement read: "Munster's James Cronin, accompanied by team manager Niall O'Donovan, appeared before an independent Celtic Rugby disciplinary committee in Glasgow, having been cited for alleged foul play in last Saturday's game against Leinster.
"The Disciplinary Committee, chaired by Rod McKenzie along with Kathrine Mackie and Rory Bannerman (all Scotland), having considered all of the evidence and listened to representations by and on behalf of Mr Cronin, found that Mr Cronin had committed an act of foul play under Law 10.4(b) that warranted a red card (namely, recklessly stamping on the head of an opponent).
"Having heard submissions on sanction, the Disciplinary Committee concluded that the offending was at the mid range of World Rugby's scale of seriousness for this type of offending, which has an entry point of 5 weeks.
"After taking into account mitigating factors, the Disciplinary Committee determined the appropriate sanction to be a playing suspension of 4 weeks."
Cronin will be free to play again on November 7.