A woman has been seriously injured after slipping from the bonnet of a moving car while celebrating in Māngere in the early hours.
The incident has prompted police to appeal to rugby league fans to celebrate safely ahead of the Rugby League World Cup semi-finals in England this weekend.
Counties Manukau West Area Commander Inspector Matt Srhoj said the incident was preventable.
"Police have been warning the community that something like this could happen and unfortunately we now have a woman in Middlemore Hospital with serious injuries," he said.
Just after 1am, emergency services responded to the incident Robertson Road in Māngere where fans had congregated overnight.
"The victim had been sitting on the bonnet of a moving car, when she has slid off and been run over by the vehicle leaving her trapped," Inspector Srhoj said.
"At this stage the victim remains in a serious but stable condition. Police have been speaking with the driver involved as part of our enquiries into the incident."
Police officers have been assigned to various centres to monitor celebrations and to ensure the safety of supporters and wider public.
"It is an incredibly exciting time for league fans as the business end of the tournament nears, but our plea is that they consider everyone's safety and the wider community.
"Our concern continues to be that dangerous activities or unlawful behaviour could lead to further serious or fatal injuries."
Inspector Srhoj said police were asking fans to celebrate peacefully, lawfully and respectfully.
At the Rugby League World Cup the Kiwis and Samoa are into the semi-finals, the latter after edging Tonga 20-18 in Warrington yesterday.
The Kiwis will play Australia on Saturday while Samoa will face hosts England early on Sunday.