A large-scale search is under way in the Murray Mallee region of South Australia for evidence linked to the murders of four men.
A team from the Major Crime Investigation branch is on Tuesday scouring a 15-hectare property connected to the Adelaide chapter of the Hells Angels bikie gang.
The property is notorious for concerts and drag races hosted by the group.
They are looking for a vehicle and firearms connected with the murder of Mark Boyce in 2017 and the shootings of Graham Nixon, Sinibaldo Palombi and Hubert Western in 1999.
Two men were arrested after the the trio was gunned down outside the group’s headquarters, but charges were withdrawn because Rebels members refused to cooperate.
Joshua Roy Grant was earlier this year found guilty at trial of the bashing murder of Mr Boyce, but police believe two other people were involved.
SA Police head of Major Crime Des Bray said the property at Ponde, 25 kilometres north of Murray Bridge, had been searched before but a renewed effort would be more thorough.
“This is an extensive property and police may be here for several days,” Detective Superintendent Bray said.
He said the search team would use ground-penetrating radar and involve mounted and dog operations.
© AAP 2019