A police officer who was also a "keen pig hunter" had an unacceptable conflict of interest during a poaching sting operation in Otago, an investigation has found.
The Independent Police Conduct Authority (IPCA) has released its report on the actions of two officers, who were also recreational pig hunters, during Operation Poacher in 2013 and 2014.
Its findings have kicked off a national policy review into police blanket trespass notices.
Operation Poacher began in 2010 with police issuing trespass notices as an answer to the spate of theft, drug, vandalism and poaching offences in forests throughout the Southern police district between 2007 and 2009.
The IPCA received multiple complaints from local pig hunters in late 2013 and early 2014 relating to blanket trespass notices banning them from 147 forestry blocks in Otago and Southland.