Bulldogs officials are to ban three spectators for periods between three and 15 months after North Queensland fans complained of being harassed after their NRL match on Sunday night.

Southern Stampede fan group members said they had been jostled and abused as they left Sydney Showground, the Sydney Morning Herald reports.

"We've had a lot of support from our fans in identifying three people who were involved in some incidents," Bulldogs CEO Malcolm Noad said.

The Bulldogs operate under a suspended $350,000 fine for misconduct by fans but NRL boss David Gallop ruled out activating it.

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