Detectives from the Missing Persons Squad have arrested a 42-year-old man as part of their investigation into the 2012 suspicious disappearance of Brendan Breen.
Investigators travelled to Queensland and arrested the Brisbane man this morning.
He has been interviewed and released pending further enquiries.
The arrest forms part of the investigation into the disappearance of 55-year-old Brendan, who was last seen in Melbourne on 12 April 2012.
He was then reported missing to police in 9 May 2012 by his seperated spouse, who he remained on good terms.
She became concerned when he cancelled dinner with her last minute via text message and then stopped answering her phone calls.
They were initially unsure whether Brendan had chosen to disappear of his own accord.
A public appeal was also issued, however this did not lead to any further information about Brendan's whereabouts.
Despite a number of enquiries over the next few years, Brendan could not be located.
In October 2018, Brendan failed to appear at his daughter's funeral and his family believed this to be out of character as the pair were close.
The matter was reviewed and detectives now believe Brendan's disappearance is suspicious, and he has most likely met with foul play.
His bank accounts and phone have never been accessed, and there has never been any reported sightings of Brendan.
Brendan was known to police and had previously been charged with fraud offences, spending several years in a correctional facility.
Over the past 14 years, police have spoken to a range of Brendan's friends and associates in an effort to try and determine his whereabouts, who may be involved in his disappearance and any possible motivation for causing him harm.
Brendan is described as 183cm tall with a medium build, olive complexion, grey receding hair and blue eyes.
He was also previously known by the name Brendan Green, Brian Greer and Brendan Lacombe.
Police are also re-releasing images of Brendan in the hope that they will assist people to come forward with information about his disappearance.
Anyone with any information regarding Brendan's disappearance is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au