Chief Minister Michael Gunner made the announcement on Sunday morning after the source of the infection was found - a 21 year old woman from Cairns who had lied on her border form about having visited a hotspot in Victoria.

Here are the main points you need to know about the lockout rules

COVID-19 NEWS:

From 3pm on Sunday, November 7 Katherine, Darwin, Palmerston and the Rural Area are in lockout, with this scheduled to end at 11:59pm on October 8.

Under a lockout, fully vaccinated residents are able to live normally within the lockout area. Everyone must wear a mask outside their place of residence. Travel is permitted between the Katherine and Greater Darwin lockout zones - if you are double vaccinated - but not to other parts of the NT.

Unvaccinated, including those people who have received only their first dose of a COVID-19 vaccine, must stay at home during a lockout period and are only permitted to leave for the following five reasons:

1. Medical treatment, including getting a COVID test or getting vaccinated;

2. For essential goods and services, like groceries and medicines;

3. For work that is considered essential and can't be done at home;

4. For one hour of exercise a day, with one other person or the people that you live with, and no further than five kilometres from your home; and finally

5. To provide care and support to a family member or person who cannot support themselves. This includes separated families sharing the care of children.

Vaccinated and unvaccinated essential workers are allowed to go to work in Katherine and Darwin.

It is important that you continue to use The Territory Check-In App to check in everywhere you go, every time, no matter how long you spend at that location. Checking in with The Territory Check-In App is fast and secure and allows our health teams to quickly undertake contact tracing.

Check exposure sites on the NT Health website.

Book your COVID-19 test online at https://coronavirus.nt.gov.au/stay-safe/symptoms-testing

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