Description: New evidence linking a missing New Zealand woman with a notorious 1970s drug syndicate has prompted Australian police to reopen her case after 30 years.

Police are offering a $125,000 reward to reboot the cold case murder investigation.

Marion Sandford disappeared from her Sydney home on January 24, 1980.

The 23-year old left a note for her brother, Peter, to say she was with some friends and would return in a few days. She has not been seen since.

Peter Sandford, who now lives in Wellington, said as time went by, he knew his sister would never be coming home.

At the time of her disappearance, Marion Sandford had been involved with drugs in New Zealand and Australia.

New South Wales police say They have uncovered information to suggest she may have been looking to get involved in the importation side of things, as a drug courier.

Police have not ruled out a possible link with the Mr Asia drug syndicate, led by New Zealand-born career criminal Terry Clark, which in the 1970s trafficked heroin into New Zealand, Australia and Britain and was believed to be behind several murders.

At the time of Marion Sandford's disappearance, Clark was behind bars in England for the murder of a criminal colleague, but the syndicate was still active.

Police hope the announcement of the reward money for information relating to Ms Sandford's "presumed murder" will motivate someone to come forward.

Contact this site with information.