A 33-year-old woman has been arrested and charged in Mildura after police allege she attempted to import about 500 millilitres of 1,4-Butanediol, also known as bute, into Australia.

Victoria Police said the substance was intercepted at Melbourne Airport in June by the Australian Border Force. The interception formed part of a multi-agency investigation into the alleged importation, which was bound for the regional Victorian city.

Detectives from the Mildura Divisional Response Unit arrested the woman at a Mildura address on Friday morning. Victoria Police said the arrest followed the investigation involving multiple law-enforcement agencies.

The woman was charged with the Commonwealth offence of importing a marketable quantity of a border-controlled substance. The allegation has not been tested in court.

The Australian Federal Police describe 1,4-Butanediol as a harmful substance linked to sexual assaults and overdoses. The source material does not provide further details about the alleged shipment or the circumstances of the investigation.

The woman has been remanded in custody and is scheduled to appear before the Mildura Magistrates Court on December 16.