Australian authorities were scrambling on Thursday to find the source of a COVID-19 infection which killed a 30-year-old man in the remote mining town of Blackwater in Queensland state The man on Tuesday became the youngest person to die in Australia from COVID-19, with authorities dispatching a rapid response team to locate the source of his infection, reports Xinhua news agency.

However, despite conducting testing on roughly 20 people who had been in contact with the man, as of Thursday morning health officials were unable to positively identify any other cases. The man's partner, who displayed symptoms of the virus and was placed in isolation, also tested negative.