Police operation under way in regional Victorian town in manhunt for accused cop killer Dezi Freeman

A police operation is under way in a regional Victorian town as part of the continued manhunt for accused cop killer Dezi Freeman.

Victoria Police confirmed a number of police and specialist resources are currently in Benalla, located around 103 kilometres from Porepunkah, for a planned operation.

Bearcat and police officers were seen in Benalla and the nearby town of Goomalibee.

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"There is no immediate risk to community safety and further information will be provided once operationally appropriate to do so," a police spokesperson said.

"This forms part of the ongoing investigation in the Porepunkah area in the search for Desmond Freeman."

There has been no official sighting of Freeman since he allegedly gunned down police officers Neal Thompson, 59, and Vadim De Waart-Hottart, 34, on August 26.

Police on Monday confirmed the number of officers on the ground in Porepunkah and surrounding regions had been scaled back since the shooting over a month ago.

Victoria Police Chief Commissioner Mike Bush said over 200 officers were still in the area, marking less than half the amount of authorities that were combing the area for Freeman weeks ago.

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Bush provided an update on the hunt during a memorial for fallen officers in Melbourne, where he said police officers around the country are still "hurting".

"At the height we had nearly 500 officers up there conducting the search, investigating and providing reassurance to the community," Bush said.

"At the moment, we have in excess of 200 officers there.

"We will continue to rotate police officers through there, a) conducting searches, b) continuing the investigation and c) providing reassurance to the community who needs it."

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Bush said police have so far searched 40-square-kilometre area by foot and air to find Freeman.

The month-long search has involved mineshafts, caves, huts and properties in Porepunkah and surrounding regions.

"It's extremely challenging. We have to often revisit things we've already searched to make sure we haven't missed anything," Bush added.

"And we will not give up until we find that person."

A $1 million reward for any information which leads to the arrest and conviction of the person responsible remains on offer.

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