Freeman has been at large after 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.
More than 400 police were deployed in the days after the killings, however, 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.
Detective Senior Constable Thompson, 59, was just a week away from retiring, while Senior Constable 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 in the region, located about 300km northeast of Melbourne.
Investigators in December revealed they had shifted their search efforts to locating the body of the self-described "sovereign citizen", however a five-day effort to scour the bush with cadaver dogs and drones yielded nothing.
Teams on foot also conducted line searches and cleared caves in the heavy terrain.
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 the fugitive, who is considered armed and dangerous, in the event of a sighting.
Victoria Police have offered a $1 million reward and the possibility of indemnity for information leading to his capture - the largest reward in the state's history for facilitating an arrest.
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