A New Zealand citizen who fell ill after drinking contaminated alcohol in Laos has returned home following the deaths of six tourists due to supected methanol poisoning. New Zealand’s foreign ministry had earlier reported that one of its citizens fell ill in Laos and was believed to be a victim of the poisoning.

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

The problem with methanol poisoning is that it looks very much like alcohol poisoning. And delays in treatment can be fatal.