Former Great Britain coach Brian Noble says the incident in the stands after the Salford win over Huddersfield was bad but rare in rugby league.
Members of the crowd clashed with stands and Salford players intervened following the end of the game on Sunday.
Noble described the incident as abnormal.
“It’s bad and the truth is it’s not normal is it,” he said on BBC’s Super League Show.
“This is abnormal. It’s not good, it needs sorting ou quickly and it will be sorted out quickly. Someone will get a ban or kicked out and rightly so.”
Huddersfield prop Eorl Crabtree saw the fracas at the John Smith’s Stadium.
“You can understand the players trying to do their best to protect their families,” he said.
“It’s a sad state of affairs, it’s isolated and you don’t see this often. That’s the beauty of our game but it’s something that needs to be addressed.
“They’re [clubs and the RFL] working together, which is great. This is what it’s about, getting together as a sport and ruling this out.”