Tan Duc Thanh Nguyen

An Indonesian justice ministry official announced on 5 June 2018 that Nguyen had died of stomach cancer on 9 May.

Nguyen died from cancer on 9 May 2018 in a Jakarta hospital, aged 34, confirmed by the Department of Foreign Affairs and Trade.

After initially serving time in Bali's Kerobokan Prison, in 2014 Nguyen and Stephens were transferred to a prison in Malang, East Java when it was reported that they had violated prison rules.

Rush took action in the Federal Court of Australia against the AFP for breach of the bilateral treaty between Indonesia and Australia when information was handed by the AFP to the Indonesians. Rush's case claimed that such information should only be released by the Attorney-General. However, the Commonwealth Government maintained that the treaty only applies after a suspect is charged. The application was dismissed by the Federal Court in January 2006.

On 15 February 2006, Nguyen was sentenced to life imprisonment. Commenting on the sentences at the time, Australian Federal Police Commissioner Keelty stated:

Appealing against the sentence, on 6 September 2006, his sentence was upgraded to the death penalty. On 5 March 2008, three judges in the Indonesian Supreme Court in Jakarta decided to spare the lives of Nguyen, Chen, and Norman.

Arriving in Bali on or about 8 April 2005, Rush and Czugaj met co-ringleaders Myuran Sukumaran and Andrew Chan at the Hard Rock Hotel, and also Renae Lawrence and Martin Stephens. On 14 April, Norman, Si Yi Chen, Lawrence and Stephens checked into Adhi Dharma hotel in Bali, with Nguyen arriving in the same hotel two days later. In the evening of Sunday 17 April, acting like tourists, Nguyen, Norman, and Chen checked into the Melasti Hotel. Myuran Sukumaran, who was also with them, with his bags, left them with the others as he decided to go to the Hard Rock Hotel complex.

Approximately 20 minutes after checking in, Nguyen was arrested at the Melasti Hotel in Kuta on 17 April 2005 with Matthew Norman, Myuran Sukumaran and Si Yi Chen. Indonesian police claim the group were in possession of 334 g (11.8 oz) of heroin and bundles of plastic wrapping, Elastoplast tape, and a set of scales, indicating involvement in a plan to transport drugs to Australia.

Criminal trials for the accused commenced in the Denpasar District Court on 11 October 2005. Chen, Nguyen, and Norman, all arrested at the Melasti Hotel and earning the epithet, The Melasti Three, were tried together, with the remaining six defendants tried separately.

In December 2005, it was reported that tensions were building between the Bali Nine drug mules and Sukumaran and Chan. Several days later, lawyers acting for some members of the Bali Nine initially sought the support of the Director of Public Prosecutions to intervene and lay charges for conspiracy to import drugs, so that the nine could be extradited and charged under Australian law. However, the judges hearing the trial matters in Bali called on Australia not to interfere in Indonesia's right to impose capital punishment;. Lawyers acting for Stephens, one of the Bali Nine, claimed that the fairness of his trial was in jeopardy following comments made in the media by Indonesian Foreign Minister Hassan Wirajuda that Australians should be prepared for members of the Bali Nine to receive a death sentence, if found guilty.

Media reports based on the testimony of co-conspirator, Renae Lawrence, claim that Nguyen (going by the alias of David), from Wellington Point in Brisbane, Queensland, had arranged an earlier attempt at trafficking from Indonesia to Australia. This attempt in December 2004 involved Lawrence, Andrew Chan, Matthew Norman and others. The delivery was aborted when heroin suppliers failed to deliver "due to a financial matter or someone knowing about the plan the shipment was cancelled".

Tan Duc Thanh Nguyen (Vietnamese: Tân Đức Thanh Nguyễn; 30 October 1983 – 9 May 2018) was a Vietnamese–Australian citizen. He was convicted in Indonesia for drug trafficking as a member of the Bali Nine. In 2005, Nguyen was arrested in a room at the Melasti Hotel in Kuta together with three others. Police uncovered 334 g (11.8 oz) of heroin in a suitcase in the room. After a criminal trial, on 15 February 2006 Nguyen was sentenced to life imprisonment. His appeal to the Indonesian Supreme Court to have the sentence reduced suffered a shock when the Supreme Court imposed the death penalty on 6 September 2006.