Seven tourists in Fiji have been hospitalized with suspected alcohol poisoning and several are reported to be in a serious condition.

It is believed that they drank cocktails at a tourist bar on Saturday night local time and soon after, developed nausea, vomiting and neurological symptoms.

Four of the seven are from Australia, aged between 18 and 56, one is American and the other two are also foreigners, according to local media reports citing the health ministry.

The event comes weeks after the the death of six tourists in the Southeast Asian country of Laos because of suspected methanol poisoning.

The tourists in Fiji, who were reportedly staying at the five-star Warwick Fiji resort on the Coral Coast, were first taken to Sigatoka Hospital.

They were later transferred to Lautoka hospital, according to the Fiji Times.

A 56-year-old Australian woman was under constant observation at the hospital and a 19-year-old woman, also from Australia, suffered "serious medical events," according to ABC News.

Two other Australian women, aged 49 and 18, were in critical but not serious condition, the ABC said.

The Warwick Fiji hotel said it is taking the case "very seriously" and is "conducting a thorough investigation" while awaiting a "test result report" from the authorities Cheers.

Australia's Department of Foreign Affairs and Trade (DFAT) has advised tourists to "be aware of the potential risks of swilling drinks and methanol poisoning through the consumption of alcoholic beverages in Fiji ".

The guidance said tourists should "get emergency medical help if you suspect you are sneezing drunk".

Fiji police are said to be investigating the circumstances of the incident.

Two Australian families in Fiji are receiving consular assistance, a spokesperson from the Australian Foreign Ministry told the BBC.