It's called methanol.
The chemical was detected in the bodies of every teenager/youth
who died at the South African tavern one terrible night.
The toxicologists are still working out if the methanol killed them.

One thing the toxicologists have concluded is that:
alcohol poisoning may be ruled out.
Also, although carbon monoxide was present in all the dead bodies,
it was not carbon monoxide poisoning, either, which killed them.

The tavern is closed,
and following arrest,
the owner is out on bail. I wonder if he still requires guards?