A man involved in a threat against the Rotorua District Court yesterday is being tested for Covid-19

Police have confirmed two people are in custody after yesterday's threat - and one told Police this morning he's been feeling unwell since recently returning from Hong Kong.

He's being tested for Covid-19 and has been put into isolation -- along with all others who were in custody at Rotorua Police Station.

All sites, including the courthouse, are being decontaminated.

Police staff who have been in close contact with the individual have been told to self-isolate.