A Victorian national park will remain closed over the long weekend as the search for accused gunman Dezi Freeman continues after more than four weeks.

The 56-year-old has been the subject of one of Australia 's largest ever police operations after he allegedly shot two police officers and injured another at a home in Porepunkah in the state's alpine region on August 26.

A $1 million reward is on offer for information that leads to Freeman's arrest but the public has been warned not to search for the armed man.

Police have been patrolling Mount Buffalo National Park, a sprawling 31,000-hectare area located about 350 kilometres north-east of Melbourne.

Ahead of the long weekend, a Parks Victoria spokesperson said the park would remain closed as police continued to patrol t

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