A fresh police search has been launched to find fugitive Dezi Freeman – or his remains – almost two months after investigators ended a major five-day effort to recover his body.

Freeman has been on the run since allegedly shooting dead police officers Neal Thompson and Vadim de Waart-Hottart as they served a warrant at his home in the small Victorian town of Porepunkah in late August.

In the days after the killings, more than 400 police searched for Freeman. But they failed to uncover any trace of the 56-year-old, who was last seen fleeing into dense bushland in the alpine region shortly after the shooting.

Vadim De Waart-Hottart and Neal Thompson were shot while trying to serve a warrant. Photo: AAP 

Thompson, 59, was just a week away from retiring, while de Waart-Hottart, 34, was on temporary assignment to the area.

On Monday, police will begin a fresh five-day search of Mount Buffalo National Park, including remote sites. The region is about 300 kilometres north-east of Melbourne.

In December, investigators revealed they had shifted their search efforts to finding the body of the self-described “sovereign citizen”. However, despite a five-day effort scouring the bush with cadaver dogs and drones, nothing was found.

Teams on foot also conducted line searches and cleared caves in the heavy terrain.

A previous search involving cadaver dogs and drones found no trace of Freeman. Photo: Victoria Police

Detectives from Taskforce Summit, formed in October, have investigated thousands of pieces of intelligence, including numerous tip-offs from the public.

People in the area have been advised to remain vigilant and not approach Freeman, who is considered armed and dangerous, if they see him.

Victoria Police have offered a $1 million reward and the possibility of indemnity for information leading to his capture. It is the largest reward in the state’s history for information leading to an arrest.

-AAP