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.

The father of Holly Bowles has confirmed that the Melbourne teenager has died in a Thai hospital after a suspected methanol poisoning incident while holidaying in Laos. Her death was confirmed one day after the passing of her best friend,

The Laos government said on Saturday (Nov 23) that it was "profoundly saddened" by the deaths of foreign tourists in Vang Vieng, with the toll from a suspected methanol poisoning incident now at six.