Chester Hill: Brawl breaks out after Lalor Park Kookas v Berala Bears game

Terrifying footage has emerged of a brawl breaking out after an A grade rugby league game in western Sydney.

The fight broke out 30 minutes after the Lalor Park Kookas took home a narrow victory 28-24 against the Berala Bears at Chester Hill on Sunday afternoon.

The video shows a crowd of more than a dozen men – many wearing team jerseys – locked in a tight circle as those at the centre throw powerful punches.

In less than a minute of video, the brawl moves through a carpark and onto the edge of the field as multiple men appear to pursue a man wearing a jersey.

By the time officers arrived on the scene, the brawl had broken up and the group had dispersed.

Police have made inquiries and believe the brawl involved members of the two teams.

Investigators have not spoken to anyone involved but are urging anyone with information to come forward to police.

The NSW Rugby League released a statement to The Daily Telegraph saying it had a zero-tolerance approach towards violent and abusive conduct towards players, officials and spectators.

"The incident will be reviewed (on Monday) by the NSWRL in conjunction with Canterbury-Bankstown District Junior Rugby League and Parramatta Junior Rugby League," a spokesperson said.

"The review will take into account any video footage as well as reports from the ground manager, referees and any eyewitnesses."