Inquest Into Music Festival Deaths To Hear From Medical Experts

Witnesses including emergency services staff, medical experts and music festival organisers are expected to be called to give evidence at an inquest into six drug-related deaths in NSW.

The inquest, which began on Monday at the NSW Coroners Court in Lidcombe, is examining the deaths of Diana Nguyen, Joseph Pham, Callum Brosnan, Joshua Tam and Alexandra Ross-King at NSW festivals between September 2018 and January 2019.

Their deaths will be considered alongside the death of Hoang Tran -- known to his family as Nathan -- who died after attending Knockout Circuz in December 2017.

The inquest will hear from medical professionals. Getty Images.

Counsel assisting the coroner, Peggy Dwyer, said autopsy reports indicated all six died as a result of MDMA toxicity or complications from MDMA use.

They also exhibited soaring body temperatures, respiratory problems, muscle and jaw spasms, out-of-character aggression and cardiac arrests.

The inquest, which continues on Tuesday, will attempt to identify the common themes as to the cause of deaths and lessons as to how they might have been prevented.

In each of the six instances Deputy State Coroner Harriet Grahame will consider whether medical treatment was adequate and appropriate, and if effective harm minimisation strategies were in place at the festivals.

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Alex Ross-King died at a music festival in NSW. Photo: Supplied.

Experts will be called to testify about shade tents and cool down areas, access to water, information and peer support, law enforcement and drug checking - also known as pill testing.

NSW's chief health officer Dr Kerry Chant is also expected to give evidence that there has been a recent increase in drug-related harms associated with a small number of the state's music festivals.

The inquest will run for two weeks with further hearings in September.