The father of an Australian teenager who died from suspected methanol poisoning while on a backpacking holiday has issued a plea to the Laos government to fully investigate his daughter’s death and ensure such incidents don’t happen again.

Six travelers have died from suspected methanol poisoning in Vang Vieng, Laos. Most of these incidents occur in Asia, according to Doctors Without Borders.

(Reuters) -A New Zealand citizen poisoned after drinking contaminated alcohol in a popular tourist town in Laos has returned home, authorities said on Monday, as Laos pledged to prosecute those responsible for the incident which has killed six tourists.

The Laotian government on Saturday officially acknowledged the mass poisoning that has killed at least six tourists, pledging it would bring perpetrators to justice

The Lao government is "profoundly saddened" by the deaths of foreign tourists from drinking alcohol contaminated with methanol and pledged to prosecute those responsible.

The victims were an American, two Danes, two Australians, and a Brit. Australia's prime minister called the ordeal "every parent's very worst fear."

The U.S., Australia and U.K. have issued warnings for travelers in Vang Vieng after several tourists died in a suspected methanol poisoning outbreak.

An American man was among at least six tourists who were killed in a mass alcohol poisoning case in a popular tourist town in Laos.

Six travelers have died from suspected methanol poisoning in Vang Vieng, Laos. Most of these incidents occur in Asia, according to Doctors Without Borders.