Investigators consider there's a "sturdy chance" that Nicola La Falce's physique is at an deal with recognized of their chilly case evaluation, which started earlier this 12 months.
It comes simply days after Western Australia Police introduced a $500,000 reward for any info that results in a conviction.
La Falce was final seen visiting a pizza retailer in Wembley in 1994, however police consider he acquired a "regarding" cellphone name earlier than he left the store about 9pm.
He was by no means seen once more.
WA Police Detective Inspector Darryl Cox mentioned the cellphone name was created from a landline on the deal with they've searched at the moment.
"Mr La Falce was involved with that cellphone name left pizza store shortly after," he mentioned.
"The yard will likely be excavated by the forensic human restoration staff additional search warrants might happen.
"However (we) are trying on the rear yard and we might have to make use of some equipment to dig up the yard.. investigators consider there's a sturdy chance that the physique of Mr La Falce could also be positioned at this premises."
In a puzzling twist, 24 hours after disappearing, an airfare to Adelaide was booked in his identify.
The brick layer's automobile had been dumped at Perth Airport however he by no means boarded the flight.
Since saying the reward, Detective Inspector Cox mentioned police had acquired a number of leads on the suspected homicide.
"Three cellphone calls had been made to crime stoppers and a kind of is of explicit curiosity to the investigation staff and they're following that up at the moment," he mentioned.
"Detectives are assured some individual inside the neighborhood has intimate information of what occurred to Mr La Falce - we wish that individual to come back ahead.
Police have requested the general public to contact them if they'll provide info.