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Christchurch City Council security contractor, Allied Security, is patrolling the 602ha area.
Management of the red zone was transferred from Land and Information New Zealand to Christchurch City Council in June last year.
Residential red zone manager Dave Little said when the city council took over, it had a greater presence with maintenance staff and park rangers.
Working with the community, at the time they noticed a visible reduction in dumping, vandalism and theft and felt the cost of the security patrols wasn't warranted.
However, Little said anti-social behaviour had increased this year.
"Vandalism, theft and illegal dumping have become big problems" so the patrols were reinstated.
Data on anti-social behaviour hotspots will be collected to help determine the security patrol routes.
- By Geoff Sloan
- Public Interest Journalism funded through NZ On Air