A Hells Angels outlaw motorcycle gang clubhouse has been raided and items seized by Victoria Police in an ongoing search for missing South Australian man Kerry Giakoumis.
The clubhouse in Thomastown was searched on Monday morning.
Police on Monday afternoon said "a number of items" had been seized in the search and would now be forensically examined.
No one has been arrested.
It follows multiple searches of the Jacksons Creek area in Diggers Rest this month for Mr Giakoumis' remains.
The 29-year-old was last seen at the Hells Angels club house on Lipton Drive, Thomastown, in the early hours of June 10 last year.
He had travelled from Adelaide to Melbourne five days earlier with two associates, who police believe are members of the Hells Angels.
Mr Giakoumis was not a patched member and had told his family he intended to work in Melbourne as a concreter.
He talked to his SA family while he was in Melbourne and his mum had booked a June 10 flight for him to return home, but he never boarded and his family has not heard from him since.
A task force including Homicide Squad, Missing Persons Squad and bikie gang-focused Echo Taskforce officers, is investigating his disappearance and suspected murder.
Detectives still believe some kind of dispute took place on the night Mr Giakoumis was last seen and may be connected to other members or associates of the Hells Angels.
In June last year, detectives searched several properties including the Thomastown clubhouse.
Police want to speak to anyone who has information about what happened at the clubhouse or any other location in the early hours of June 10 and anyone who noticed any suspicious activity in the Jackson's Creek area about the same time.