Authorities admit alleged Porepunkah gunman Dezi Freeman knows the bush better than they do, and survival experts warn he could remain on the run for weeks depending on his skills and training.

A manhunt is underway for 56-year-old Dezi Freeman after he allegedly killed two police officers in the rural Victorian town of Porepunkah. Freeman has been described as a "very active sovereign citizen".

A reporter from A Current Affair has revealed the chilling impression he got from Dezi Freeman, the self-described sovereign citizen, accused of killing two police officers — saying he seemed “obsessive” during a segment in which he complained about his neighbours.

Sovereign citizens believe they are separate from the countries they live in and the law does not apply to them

A police manhunt in Australia's Victorian alpine region continues for Dezi Freeman, a heavily armed local who allegedly killed two officers. Freeman, known for his bushcraft skills, fled after the incident.

The ambush that killed two Victoria Police officers and wounded a third in Victoria’s alpine region highlights the deadly reach of the “sovereign citizen” movement, a fringe ideology that refuses to recognise Australia’s laws and is increasingly turning violent.

Police have confirmed that they are searching for Dezi Bird Freeman, a conspiracy theorist and self-described "sovereign citizen" who rejects government and law. Freeman, 56, has a long history with the police, and his hatred of authority has been well documented in online posts, videos and court documents.

The self-identified "sovereign citizen" who police believe shot and killed two Victoria Police officers remains at large in remote bushland.