Metropolitan Perth, Peel and the South West will enter a five day lockdown after 6pm tonight.
Premier Mark McGowan said a quarantine guard at a hotel had tested positive to COVID-19, and his family had been isolated and tested.
“At midnight last night, we received a positive COVID-19 test result… from a male hotel quarantine guard in his mid 20s,” Mr McGowan said.
The guard was working at the Sheraton Four Points, and had previously tested negative three times in recent weeks, Mr McGowan said.
The guard developed symptoms on Thursday.
“We are told the guard was working on the same floor as a positive UK variant case,” Mr McGowan said, although it is not yet clear what strain the guard has.
Exemptions will include shopping for essentials, medical needs, exercise within the neighbourhood, or work where it can not be done remotely.
Masks will be required outside.
Bars, clubs, casinos, and libraries are among the businesses which will close, while restaurants and cafes will only be allowed to sell takeaway. Schools will not open tomorrow.
Mr McGowan stressed supermarkets would stay open.
"You do not need to rush to the supermarket today, take care of your loved ones... our state is well equipped to handle this situation," he said.
Mr McGowan said the guard may have been working a second job in rideshare, and it is believed he has not worked since his last quarantine shift.
CONTACT TRACING
A list of potential exposure sites has been published by the the Department of Health. People who have attended these venues at these times must be tested.
So far, locations include:
-Coles Maylands supermarket on 25 January from 8pm to 10pm
-KFC Maylands on 27 January from 6pm to midday
-Mitsubishi Motors car dealership in Midland on 27 January from 7pm to close
-Spudshed, Coventry Village in Morley on 27 January from 8pm to midnight
-ECU Joondalup on 28 January from 11am to 2pm
-Consulate General of India on St Georges Terrace in Perth on 28 January from 12pm to 5pm
-Halal Grocery Store in Cloverdale on 28 January from 7pm to 9pm
-Venus Ladies and Gentleman Hair Design Maylands hairdressers on 29 January from 1pm to 3pm
-Perth Convention Centre on 29 January from 4pm to 6pm
-Nedlands Family Practice GP surgery on 29 January from 5pm to 6pm
-Chemist Warehouse North Perth Pharmacy on 29 January from 5.30pm to 7.30pm
-7-Eleven Ascot petrol station on 29 January from 8pm to 9pm
-Coles Maylands supermarket on 29 January from 8pm 9pm
-Puma Service Station in Burswood on 30 January from 11am to 12 midday.
-Coles Express/Shell Service Station in Cloverdale on 30 January from 12 midday to 3pm
-Pharmacy 777 at Maylands Park Shopping Centre 30 January from 2.30pm to 4pm.
In addition, people who live or work in the Falkirk Avenue, Maylands area including Coles, Liquorland and the Maylands shopping precinct should present for a test, the government has said.
