Police expand search for missing Melbourne man after suspicious disappearance

Police are expanding their investigation into the suspicious disappearance of a Melbourne man after a "significant and violent" incident at his home.

Brendon Farrell was last seen by a friend around 12.30pm on Monday, May 31 at the bungalow he lived in behind a main building at 21 Kidds Road, Doveton.

Investigators have today extended their search for Mr Farrell to include the Cranbourne area south-east of Melbourne - specifically parkland off Cemetery Road.

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The 32-year-old's was reported missing by family on June 2 who said his disappearance was out of character.

Missing Persons Squad Detective Inspector Andrew Stamper last week said police believed an altercation involving weapons happened at Mr Farrell's residence.

"A significant, violent event took place on that day," he said.

"We know there were a number of persons present at the address on that day."

Detective Inspector Stamper said investigators held "significant concerns for Brendon's welfare."

Mr Farrell has issues with the drug ice and sometimes associated with poor company.

His sister Simone Hellyer said her brother had a heart of gold and pleaded with anyone with any information to come forward.

"We fear that the worst has happened, but we can't move on either ... we don't have that closure - we don't know what to think," she said.

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"I hear my mum cry herself to sleep every night.

"Just let us have some piece of mind, or be able to move on. We need to know what's happened to our family member."

The 32-year-old was in regular contact with his family, particularly his mother with whom he spoke to almost daily.

Checks of Mr Farrell's bank accounts and phone have not revealed any activity after May 31.

Police say he had no access to a car and preferred to ride a bike to get around, however his bicycle is yet to be located.

Detectives are still keen to speak to anyone who has information about the altercation at the Kidds Road property on May 31 or has knowledge of who was present at the time.

Detective Inspector Stamper said the investigation was focusing on Mr Farrell's associates and several people were at the bungalow at the time of the 32-year-old's disappearance.

"Some of those persons we have spoken to, some of them we haven't," he said.

"Some of them we know and some of them we don't."

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Brendon is described as being around 168 centimetres tall with a slim to medium build and shaved reddish hair.

It's believed he was wearing a black tracksuit at the time he was last seen.

Police have released an image of Brendon in the hope someone can identify him and provide information about his current whereabouts.

Anyone with information about Brendon's disappearance is urged to contact Crime Stoppers on 1800 333 000 or make a confidential report at www.crimestoppersvic.com.au