UPDATE: THE fifth police raid in the Warwick region was executed on a property at Emu Vale yesterday in relation to an alleged drug network.

The raid resulted in the questioning and release of cold case person of interest Vincent O'Dempsey on Saturday.

Officers from the State Crime Command took Mr O'Dempsey and two associates to Warwick Police Station after the search of the Emu Vale property.

The three men were later released without charge.

The raids have been sparked by a renewed investigation into the 40-year-old investigation into the disappearance and presumed murder of Barbara McCulkin, 34, and her daughters Vicki and Leanne.

Police said they located evidence of a large scale drug operation during Saturday's search and evidence of a fresh marijuana harvest on the property yesterday.

Mr O'Dempsey, 77, is considered to be one of two persons of interest in the 40-year-old investigation into the disappearance and presumed murder of Barbara McCulkin, 34, and her daughters Vicki and Leanne.

A police raid on a property at Warwick.
A police raid on a property at Warwick. Candyce Braithwaite

Mr O'Dempsey's lawyer Terry O'Gorman did not return calls for comment by deadline.

A raid on a farm near Warwick on Wednesday uncovered hundreds of thousands of dollars in cash, and 30kg of cannabis with a street value of up to $500,000.

Massie man Thomas Edward Martin, a long-term associate of Mr O'Dempsey, was charged with drug trafficking offences.

8AM SUNDAY: COLD case person of interest Vincent O'Dempsey is among three men arrested by police after a search warrant was issued at a Yangan property yesterday.

Mr O'Dempsey, 77, was last night at Warwick police station being questioned by police, but has since been released without charge.

Police said they located evidence of a large scale drug operation during the search, which was the latest of a number of raids of properties in the Warwick area this week.

The raids are part of a renewed investigation into the disappearance and presumed murder of Barbara McCulkin, 34, and her daughters Vicki and Leanne 40 years ago.

Detective Inspector Mick Dowie from the Queensland Police's homicide cold case unit said on Thursday that Mr O'Dempsey had been a person of interest in the McCulkin investigation since it began.

6PM SATURDAY: POLICE from State Crime Command with the assistance of police from Warwick have today executed a search warrant on a property near Yangan via Warwick.

During the search of the large rural property, police allegedly located evidence of large scale drug production and drug equipment.

Three men are currently assisting police with their enquiries.

Investigations are ongoing and no further information is available at this time.

Anyone with information which could assist with this matter should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.


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