Darwin's coronavirus lockdown will be extended by an extra 72 hours after the Northern Territory recorded one new local COVID-19 case in the community.
Chief Minister Michael Gunner also confirmed several new exposure sites in the Greater Darwin region including a BWS bottle shop, a Bunnings and a highway restaurant.
It's the first time since the pandemic began that exposure sites have been identified in the Northern Territory.
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While authorities have said they aren't as concerned about new cases stemming from the gold mine worker, more than 150 close contacts are expected from the new exposure sites across Greater Darwin.
Mr Gunner said the extension of the lockdown until 1pm on Friday was "absolutely necessary" and that the territory was not "out of the woods yet".
"We are now in an extremely critical period, we must stay locked down while we keep this virus trapped," Mr Gunner said.
The NT's single new COVID-19 case is a 50-year-old man who worked at the Tanami mine site last Friday before being contacted by health authorities and transferred to Howard Springs the following day.
Mr Gunner said the man was infectious in the community for 36 hours and had several close contacts while he was at a private residence at Rapid Creek.
They have also been transferred to Howard Springs and are considered high-risk contacts.
Authorities have also listed several exposure sites the man visited while in the community, with them being broken down into three tiers of concern.
Mr Gunner said the highest concern related to the Buff Club Restaurant at Stuart Park where the man was from 3.30pm until 8pm on Friday, June 25.
Those who attended the venue at that time have been told to isolate for 14 days.
"Once we have a firm idea of numbers we'll report them, but right now we believe there will be as many as 150 close contacts from the site," Mr Gunner said.
Other exposure sites include Bunnings Warehouse on Bagot Road, a drive-through BWS on Parap Road and Darwin Airport.
Mr Gunner also announced that Territory Day celebrations have also been delayed as a result of the extended lockdown, though he promised a "great party" once restrictions are lifted.
"I promise you, it is not cancelled, it is delayed. Once we are through this we will name a new date and have a great party as one territory," Mr Gunner said.
