Tasmania has closed its border to Perth and the WA region of Peel after new coronavirus cases sent the two areas into lockdown.
Premier Peter Gutwein announced the regions would be considered high risk from 10am on Tuesday.
It means no one from the areas can enter Tasmania unless they have special permission from the deputy state controller.
“I would stress to Tasmanians, if you don’t need to travel interstate, don’t travel,” Mr Gutwein told reporters.
“Right now we have a number of states scrambling to get on top of the Delta strain of the virus.”
Perth and Peel were sent into a four-day lockdown overnight after a second local case was recorded, a man aged in his 30s who tested positive to the Delta variant.
Tasmania has already banned travel from 33 local government areas in NSW, including the city of Sydney.
Travellers from Darwin and two other LGAs are also banned, while Tasmania considers a host of premises in Queensland and Victoria high risk.
Mr Gutwein said three workers who returned from the Northern Territory’s Granites mine, where a person tested positive last week, have returned negative results in their first round of testing.
Two are quarantining at home, the other is in hotel quarantine.