Rotorua and Auckland have been highlighted as the two places nationwide that need most help with the fallout from synthetic cannabis abuse.
Massey University drug researcher, Dr Chris Wilkins, said while there were many more towns and cities in New Zealand that would benefit from assistance in dealing with the psychoactive substance fallout, Rotorua and Auckland were the two places to have deaths possibly attributed to use of the drugs.
"Until toxicology reports are done and results released, it is hard to categorically say people have died due to psychoactive substance abuse," Dr Wilkins said.
"But I think the time taken to have these tests done is contributing to the problem."
Dr Wilkins says better systems to collaborate and communicate were needed to ensure people were made aware of a "bad batch".