Drug testers KnowYourStuff have confirmed cathinone C86, from the "bath salts" family of drugs, has been found in Dunedin - and they are warning people against taking it.
Drug testing was carried out ahead of Saturday's Hyde St Party, the second time the Otago University Students' Association has organised for testing at a student event this year.
Students or other people in the community could bring their drugs in and determine what was in them.
Exactly what was in C86 was unknown, a statement from the drug testing organisation said.
"C86 has not, to our knowledge, been seen before and there is no information about safety, dosage, risks and interactions with other drugs. We recommend avoiding this," a statement from the organisation said.