Mark Jones says the government of Laos cannot let his daughter's death be in vain, after the 19-year-old girl fell ill and died from methanol poisoning.

A second Australian teen who fell critically ill from a mass methanol poisoning in Laos last week has died in a Thailand hospital. The family of Holly Bowles delivered the devastating update on Friday, just a day after her best friend Bianca Jones passed away surrounded by loved ones.

The two Australian teenagers who have been left fighting for their lives after reportedly consuming cocktails laced with methanol while travelling through Southeast Asia have been named.

A second Melbourne teenager has died following a mass methanol poisoning incident in Laos, bringing the confirmed death toll to six. The owner of a backpacker hostel where two young Australians were staying before they fell violently ill from methanol poisoning has been detained by police for questioning in Laos.

Melbourne teenager Holly Bowles has died in a Thai hospital nine days after consuming a suspected methanol-tainted drink in Laos, her father has confirmed.

A second Australian teenager has died of suspected methanol poisoning, bringing to six the number of foreign tourists who have died after apparently drinking tainted alcohol in Laos. The family of Holly Bowles,