Champions Cup organisers are set to investigate incidents during Munster's defeat to Saracens in the Allianz Park.

Yesterday Saracens were considering whether to make an official complaint after director of rugby Mark McCall said that hooker Jamie George was the apparent victim of a verbal assault by Dr Jamie Kearns, the Irish province's chief medic.

That exchange ended with a 30-man brawl that marred an otherwise stirring 15-6 win for the holders.

The mass fight that spilt over the sidelines and when order was eventually restored, the European champions played their best rugby of the match with tries from Sean Maitland and George sweeping them out of sight.

Saracens assistant coach Alex Sanderson alleged during a pitchside interview that Dr Kearns "said something derogatory to Jamie George about his weight" as the second quarter was coming to a close, and McCall condemned the visitors' medic.

This afternoon European Professional Club Rugby have confirmed that they will look into the matter.

A statement read: "EPCR has decided to investigate incidents which occurred during the second half of the Heineken Champions Cup, Round 4 match between Saracens and Munster Rugby at Allianz Park yesterday.

"Information will now be sought from the match officials and from both clubs, and EPCR will be making no further comment until the investigation has been completed."