Toxicology tests on the ingredients of drinks consumed by seven tourists who fell ill in Fiji showed “no methanol or illicit substances,” authorities on the South Pacific island said Wednesday.

Seven foreign tourists who were hospitalized in Fiji after drinking cocktails at a resort bar were not poisoned by alcohol or illicit drugs, officials said Wednesday following a toxicology report. The cause of the tourists' illness over the weekend remains under investigation,

The cause of the tourists' illness over the weekend remains under investigation, Fijian Tourism Minister Viliame R. Gavoka said.

Seven tourists who were hospitalized in Fiji last weekend after drinking cocktails at a luxury hotel were not poisoned by tainted alcohol, officials there say. Fiji’s Tourism Minister Viliame R. Gavoka told reporters Wednesday that the results of a toxicology report showed “no evidence of alcohol poisoning.

The cocktails that left seven tourists in hospital, including four Australians, did not contain methanol or “illicit substances,” Fiji’s deputy prime minister has said.