The Rugby Football League are to investigate comments made by Hull KR coach Justin Morgan about referee Ben Thaler.
Morgan labelled Thaler’s performance in Rovers’ Super League defeat to Huddersfield as “substandard”.
He also claimed Huddersfield were allowed to get away with “blue murder” and that Thaler should return to a lower division and “spend some time learnign the rules.”
Morgan added: “It is absolutely disgraceful every time we get him.
“There is a very common denominator every time there is a poor game of rugby league and that is Mr Thaler.”
Morgan could be disciplined if the RFL decide there is a case to answer.