Cox said there have been several incidents of poaching, with police taking these each "extremely seriously".
Police were concerned about the "extremely dangerous" offending, Cox added.
"Unlawful hunting puts other people who may be in the area at risk and could have potentially fatal consequences," he said.
It also carries a maximum sentence of two years' imprisonment and a $100,000 fine.
All hunting related items including firearms, knives, dogs, GPS units, and vehicles could also be seized.
Police urged all landowners and station managers to call police immediately if they discover people unlawfully on their land.
"They can be assured appropriate action will be taken against anyone carrying out this type of offending," Cox said.
Hunters are obliged to obtain permission from the landowner or permits from the Department of Conservation.