Police say they will not pursue charges against three people questioned in relation to the broader Dezi Freeman investigation. (Supplied)

Police have announced they will not proceed with charges against three people questioned as part of the broader investigation into alleged police killer and fugitive Dezi Freeman.

The three people had previously been interviewed by investigators from Taskforce Summit, Victoria Police said in a media released issued on Friday.

The specialist taskforce was established to lead the search for Freeman after the fatal shooting of Detective Leading Senior Constable Neal Thompson and Senior Constable Vadim de Waart-Hottart more than six months ago.

The two police officers were shot and killed — and a third officer injured — as they were executing a warrant at Freeman’s Porepunkah property last August.

Freeman subsequently fled into bushland and extensive searches alongside a $1 million dollar reward for information have failed to reveal his whereabouts.

A Victoria Police spokesperson said a 42-year-old woman and a 56-year-old man, both from Porepunkah, had since faced questioning in relation to the offence of obstructing police.

A third person whose age was not provided was interviewed over an alleged attempted theft.

Police said briefs of evidence were prepared against all three but a decision had been made not to proceed with prosecution.

“These briefs were subsequently not authorised due to there being insufficient evidence to support a prosecution at this time,” a spokesperson said.

“Those briefs were independently reviewed, and the same outcome was reached.

“Any further information received by police in relation to these matters will be thoroughly assessed and acted on as appropriate.”

Police said the investigation into the incident continued and the search for Freeman was ongoing.

“Victoria Police, through Taskforce Summit, remains relentless in its efforts to find Freeman, using every available resource and the necessary capabilities,” the spokesperson said.

Police said a heightened presence would also continue in the local Porepunkah and Mount Buffalo National Park areas.

They urged anyone who sees Freeman not to approach him but to call Triple Zero (000).

Anyone with any information on his whereabouts, or who notices anything unusual within the park, should call Crime Stoppers Victoria on 1800 333 000 or www.crimestoppersvic.com.au.