Laboratory results revealed the presence of carbon monoxide and toxic alcohol methanol, but this had not yet been pinned down as the cause of death so more tests will still be needed.
The deaths of 21 young people at a South African tavern more than three weeks ago remains a mystery as a preliminary toxicology report was inconclusive, provincial authorities said Tuesday.
The toxic chemical methanol has been identified as a possible cause of the deaths of 21 teenagers at a bar in the South African city of East London last month.