The Department of Conservation has criticised a group of anti-1080 protesters who illegally released a herd of sika deer into North Taranaki conservation forests.
The release was allegedly in retaliation for DOC's use of 1080 in the region, and put local stock at risk of TB disease.
DOC's director-general Lou Sanson said the department rushed to the forest area after receiving an anonymous tip off about the deer.
Department hunters had so far destroyed five of the animals and department staff were working to track down the rest of the animals.
Sanson called the illegal release of the deer "selfish" "short-sighted".