Trouble broke out among Salford Red Devils supporters after their team narrowly beat Huddersfield Giants.
One steward is thought to have been injured in the fracas shortly after the game at the John Smith’s Stadium finished 26-24.
It happened as the Salford players went over to applaud their fans.
Now the Manchester club has vowed to find the troublemakers.
In a tweet shortly after the game ended the club has vowed they will be “dealt with.”
The fracas happened as the Salford players went over their fans in the John Smith’s stand.
It’s unclear exactly what sparked the violence, which is unusual at rugby league games. But it’s thought a child and possibly players’ family members were being crushed in the melee and some of the players intervened to stop it.
No supporters are thought to have been injured. The injured steward was treated by St John Ambulance personnel at the scene.
Neil Atkinson reports
A tweet from Salford Red Devils owner Marwan Koukash said: “My apologies to @Giantsrl and to the decent fans.The thugs responsible will be identified and dealt with. There is no place in RL for them.”
And on the club’s Facebook site fans added to the discussion.
Liam Darby said: “Didn’t recognise faces but they dressed like at the football i.e. no Salford colours. Get them banned anyway.”
Nicola and Paul Jones added: “It’s just giving the RFL more reason to deduct points off us and get us out of Super League. Mindless idiots. It’s a family sport.”
Wesley Dore said: “An embarrassment to us all. Name and shame these clowns and get them banned from the games.”
Mr Koukash recently revealed his frustration at trying to grow the club. He said: “We’ve failed miserably over the last few years to grow the club off the pitch.
"Geographically we have the biggest catchment area of any top club and we have thousands of businesses surrounding us and it seems as if they have never heard of us. Now you will see a range of products aimed not only at our fans, but local Greater Manchester corporate business leaders as well.”