A letter spreading conspiracy theories and misinformation including claims COVID-19 testing centres are a government plan to spread the virus, have been distributed throughout a Canberra suburb.
ACT Health Minister Rachel Stephen-Smith said the letter which claimed to be an "important COVID-19 health warning" was a conspiracy theory of "mammoth proportions".
Garran residents reported receiving the letter on Thursday.
It made several false claims people could catch coronavirus if they attended testing centres and that the virus could be spread through the water supply.
It also incorrectly claimed a COVID-19 vaccine would include a tracking device.
Ms Stephen-Smith said all claims made in the letter were "far-fetched lies".
"Most people when they see it will realise its absolutely off the walls conspiracy theories," she told ABC Radio Canberra.
"It is very irresponsible to distribute this kind of material.
"This is dangerous misinformation and we absolutely condemn it."
It is understood several residents have contacted ACT Policing about the letter. It is not known if the matter is being investigated.
The Canberra Times has contacted ACT Policing.
The ACT reported five new cases of COVID-19 last week after two people returned from a Melbourne hotspot and a further three people were identified as close contacts.
The territory had previously gone more than one month without a new case of coronavirus.
There has been a huge surge in demand for testing which led the ACT government to convert the Garran pop-up hospital into a drive-in testing site.
Canberrans should get tested for coronavirus if they show any mild symptoms of COVID-19.