The mask mandate has been expanded to the Great Southern and Wheatbelt regions as the Omicron variant continues to spread throughout Western Australia.
It comes as WA recorded 10 new local cases on Thursday with exposure sites now being detected outside of the Perth, Peel and South West regions.
Three of those cases are linked to the Willagee IGA sub-cluster and five are close contacts of a previously reported case in the Rockingham area.
The remaining two cases are connected to a sub-cluster in the South West.
“What we are seeing with cases in regional WA is concerning," Premier Mark McGowan said.
“We know how quickly Omicron spreads, and we know it doesn’t respect regional boundaries."
Several exposure sites were added to the list on Thursday including the Sporting Globe Bar and Grill in Mandurah for a second time and Terry White Chemist in Waikiki.
Christmas cheers returns to Mandurah
City of Mandurah launches new community safety strategy
Winners announced for the 2024 Alcoa Peel Business Excellence Awards
Mandurah: Three girls charged with aggravated armed robbery
Teen motorbike rider critically injured in Cooloongup crash
Mandurah Estuary Bridge duplication reaches new milestone
Man charged over Karnup copper theft
The Cat Empire to headline Rockingham New Year's Eve celebrations
Two seriously injured in Casuarina crash