Alleged drug mule Cassie Sainsbury was a Sydney sex worker: report

Accused Australian drug mule Cassie Sainsbury allegedly spent five months last year working as a sex worker in a western Sydney brothel.

Media reports suggest the 22-year-old woman, who is being held in a Colombian prison, flew from Adelaide to work at Club 220 near Penrith from August 2016.

The development comes ahead of an explosive interview with the prison inmate's fiance on Seven's Sunday Night following a failed attempt by Ms Sainsbury's lawyers to force a court injunction on airing the program.

Cassandra Sainsbury, 22, is accused of attempting to smuggle 5.8 kilograms of cocaine out of Colombia before a tip-off from the US saw her arrested moments before her flight.

Ms Sainsbury claims she is innocent. Photo: 7 News

Ms Sainsbury was detained at the airport on April 12 after 5.8 kilograms of cocaine was allegedly found hidden inside 18 headphone boxes in her suitcase.

She said she had no idea there was cocaine in her luggage and has maintained her innocence.



Lisa Evans and her sister Khala Sainsbury arriving. Source: 7 News

However, following her arrest it was revealed that Ms Sainsbury had debt following the collapse of her personal training business in South Australia.

Ms Sainsbury's family continues to maintain she is innocent, with her fiancé Scott Broadbridge telling reporters he was certain she wasn't involved in the drug trade.

The 22-year-old South Australian also tried to suppress comments made in phone conversations her fiancé who was also interviewed by Sunday Night.

When asked how Ms Sainsbury came "to work for them", Mr Broadbridge said "can we stop... I don't want to mention" them.

WATCH AT 8.30: Accused cocaine smuggler Cassie Sainsbury's fiancé breaks his silence to Sunday Night