Security guards have been posted to an Auckland train station after nearby school students arranged a fight there.
Auckland Transport says it passed CCTV footage of the group of teenagers at Henderson station to the police, and is also increasing the level of security patrols after hours.
The group gathered at the station last month.
The Acting Area Commander for Waitakere Police, Rob Cochrane, says there have been several instances of pre-arranged fights, and officers have been sent to prevent them taking place.
He says officers are working closely with schools to address the students' behaviour.