Ireland scrum-half Conor Murray could be ruled out of the November internationals after being cited for striking.
Murray will face a discipliary hearing on Wednesday having been cited for striking Niko Matawalu with the elbow during Munster's win over Glasgow on Friday.
The 24-year-old faced a potential eight-week suspension, which would rule him out of Ireland's Tests with Samoa, Australia and New Zealand.
"We believe a dangerous act of foul play was committed by a Munster player against Niko Matawalu. We have formally written to the citing commissioner to draw his attention to this," said a Glasgow Warriors spokesperson.