Salford Red Devils have said they will give life bans to fans who caused trouble in their Super League defeat by Huddersfield on Friday.
Plastic beer glasses were thrown onto the pitch during the first half after a melee between players over the dead-ball line at the AJ Bell Stadium.
Huddersfield's Scott Grix and Salford's Weller Hauraki were sin-binned for their part in the confrontation.
The Red Devils say they are reviewing video footage of the crowd.
A statement said: "As a family club, Salford Red Devils will not tolerate such behaviour and the people responsible for these incidents will be banned for life.
"We are already working with stadium representatives and the police to identify the culprits."
Salford forward Adrian Morley was placed on report for an alleged headbutt in Friday's match, which Huddersfield won 19-0.
Giants coach Paul Anderson said before the game he wanted revenge following a feisty encounter between the two teams last month, in which Salford's Rangi Chase received a seven-match ban for a dangerous tackle on Brett Ferres.