An Australian teenager has become the sixth foreign tourist to die in a suspected mass methanol poisoning in Laos, as a growing list of countries warned of the potentially fatal consequences of drinking tainted alcohol in the Southeast Asian country.

A third Australian has fallen ill after consuming methanol-laced alcohol in Laos. So far, six people have died and eight arrests have been made in what is suspected to be a mass methanol poisoning.

The father of Bianca Jones, a 19-year-old Australian who was one of six tourists killed in a methanol poisoning incident in Laos, has urged authorities to conduct a full investigation into the tragedy,