The hunt for alleged gunman Dezi Freeman is in its fifth day with hundreds of police continuing to scour Victoria's high country wilderness amid strong winds and chilly conditions.
Freeman, 56, fled into the bush on Tuesday following a fatal confrontation at a property in Porepunkah, about 300km northeast of Melbourne.
Victoria Police say they have arrested a man at a property in Bright, about 6km from Porepunkah.
The arrest follows the execution of a search warrant about 4.45pm on Friday, in which guns and cannabis were seized from the home.
The man was being interviewed by investigators on Saturday afternoon.
When asked whether the man was associated with Freeman, a Victoria Police spokesperson told AAP that line of inquiry would form part of the interview conducted by detectives.
Freeman is accused of killing Detective Leading Senior Constable Neal Thompson, 59, and Senior Constable Vadim De Waart, 35.
Tough conditions have impacted search efforts with thunderstorms, lashings of rain and hail battering the rural town.
Temperatures plunged below 6C in the early hours of Saturday, with wind gusts of more than 60km/h in Porepunkah after blizzard-like conditions.
Snow was predicted down to levels of 700m.
More than 450 police officers have been deployed to Porepunkah as part of the search, which has included examining disused mines, caves and dugouts in and around the rural community.
Victoria Police issued a statement on Saturday afternoon, saying it would be relocating its forward command post from Feathertop Winery just outside Porepunkah to a government office in the town of Ovens, about 12km away.
"The new site is a fit-for-purpose facility and will best support Victoria Police's operational activity moving forward," the statement said.
"We would like to reassure the community that police are not leaving the area."
Freeman's 42-year-old wife Mali and 15-year-old son were arrested on Thursday night following an operation at an address in Chandler Court near the town's centre, before they were interviewed and released.
"There may or may not be charges that follow," Victoria Police Chief Commissioner Mike Bush said.
Police helicopters and drones have been circling the area for days in the hope of catching a sign of the fugitive's whereabouts.Â
Concerned friend Marlie Thomas said Freeman had become more withdrawn in the days before the fatal shootings.
She attends the local Our Lady of Snows Catholic church - alongside Freeman and his wife - which remains closed.
"We knew he was withdrawing a little bit," she told AAP.
"We said, 'we've got to keep a closer eye on him'."
A weekly parkrun event in nearby Bright was cancelled on Saturday after police "recommended this is the best thing to do", organisers said on social media.
Freeman, who has bush survival experience, was last seen in dark green tracksuit pants, a dark green rain jacket, Blundstone boots and reading glasses, police said.
He is believed to be a sovereign citizen, a follower of an ideology that rejects government authority and the rule of law.
8°C