Munster have been cleared of any wrongdoing by European Professional Club Rugby (EPCR) over their handling of Conor Murray in the victory over Glasgow Warriors.
Murray was removed from the field of play in Janury during Munster's 14-12 Champions Cup victory in Scotstoun for a head injury assessment (HIA), but had initially played on after the game was stopped for him to receive treatment.
Upon successfully completing his HIA, Murray returned to the field and played the rest of the match.
World Rugby protocol dictates that should a player lose consciousness on the pitch, they must be permanently replaced, and as there was no definitive proof of whether Murray had been knocked unconscious or not, the EPCR opened an investigation.
The governing body confirmed on Wednesday there had been no wrongdoing on Munster's part.
"After studying footage and documents submitted by Munster Rugby, the review group was satisfied, on the balance of probabilities, that Murray did not meet the criteria for immediate and permanent removal from the field of play," an EPCR statement read.
"The review group concluded that Munster's medical team - and, more specifically, their team doctor - followed the World Rugby head injury assessment protocol and used the MyPlayXPlay real-time video system that the club had invested in, to review the initial on-field assessment of the injury."
Murray is away with the Ireland squad for the Six Nations with Munster next in action against Zebre at the Stadio Sergio Lanfranchi in the Pro12 on March 25.