Perth & Peel going into full lockdown tonight after a new case of COVID-19 detected

He said it was a rapidly evolving situation and action must now be taken to protect the community.

Mr McGowan said there had been another positive case recorded on Monday evening and genomic sequencing has confirmed the original case, the physiotherapist who had visited Sydney, does have the dangerous Delta variant.

Mark McGowan called an 8pm press conference to announce WA had recorded an additional case.

The man, aged in his 30s, worked and had a meal at Indian Ocean Brewery last Tuesday.

The Premier said it was particularly concerning that the man had "only fleeting contact" with the original case.

It brings the number of cases linked to the outbreak to three. Genomic sequencing confirmed they all had the Delta variant.

It is the third lockdown of the city in the space of five months.

Schools and childcare centres will remain open, except for three schools listed as exposure sites.

Weddings are restricted to five people, funerals to 10 people and gyms, beauty and hair salons, the casino and nightclubs will close.

Mr McGowan said the lockdown would last for four days "at a minimum".

People will only be allowed to leave home to work because they can't work from home, shopping for essential items like groceries and medicines, attend to medical or healthcare needs, compassionate reasons and to get vaccinated.

Outdoor exercise is limited to one-hour per day and two people, not including children, from the same household.

No visitors will be allowed in homes unless it is for essential services, critical maintenance, caregiving and compassionate reasons.

People can only enter Perth and Peel to access or deliver essential health and emergency services. Restaurants, cafes, pubs and pars can only provide takeaway.

More to come.

Get tested immediately and isolate for 14 days if you have been to any of the following sites.

Mobius Health and Performance Joondalup: 2/7 Packard Street, 22/06/2021, 9.00am - 11.30am and 3.00pm - 6.00pm, 23/06/2021, 9.00am - 11.30am and 4.30pm - 6.00pm, 24/06/2021, 3.00pm - 4.30pm

Get tested immediately and monitor for symptoms.

IGA Mullaloo: 1/11 Koorana Rd, 27/06/2021, 9.00am - 10.15am

Craigie Leisure Centre: 751 Whitfords Ave, Craigie, 27/06/2021, 7.30am - 10.00am. Attendees of the 8.30am spin class are CLOSE contacts and must get tested and quarantine for 14 days. All other attendees must get tested and quarantine until a negative result is received.

Mirror Park Toilets: 147 Venturi Dr, Ocean Reef, 26/06/2021, 12.00pm - 12.40pm

Le Shaggy Chic Shack (café and dog grooming): 8/82 Marina Blvd, Ocean Reef, 26/06/2021, 11.00am - 12.30pm

Burbridge School: 46 Burbridge Ave, Koondoola, 22/6/2021, 11am - 1pm, 24/6/2021, 8.30am - 12.00pm

Connolly Primary School: 169 Fairway Circle, Connolly, 24/6/2021, 11.30am - 2.00pm

Koondoola Primary School: 50 Burbridge Ave, Koondoola, 22/6/2021, 11.00am - 1.00pm

IKEA Perth: 6 Sunray Drive, off Ellen Stirling Boulevard, Innaloo, 22/6/2021, 12.00pm - 2.00pm

PUMA Mindarie: 22 Anchorage Drive, Mindarie, 22/6/2021, 5.30pm - 6.30pm

Indian Ocean Brewing Co Mindarie: 33 Ocean Falls Boulevard, Mindarie, 22/6/2021, 6.00pm - 8.30pm

Kmart Ocean Keys Shopping Centre Clarkson: 23/6/2021, 6.00pm - 6.30pm

Coles Clarkson Ocean Keys Shopping Centre: 23/6/2021, 6.15pm - 7.00pm

Woolworths Currambine Central Shopping Centre: 24/6/2021, 4.30pm - 5.30pm

Rockmans Currambine Central Shopping Centre: 24/06/2021, 4.00pm - 5.00pm

Monitor for symptoms.

Ocean Keys Shopping Centre, Clarkson: 23/6/2021, 5.00pm - 7.00pm

Currambine Central Shopping Centre: 24/6/2021, 4.00pm - 6.00pm