Premier Peter Gutwein has been suddenly admitted to hospital.
Deputy Premier Jeremy Rockliff said in a statement that Mr Gutwein had been taken to hospital after becoming unwell at his office.
"He is undergoing a number of tests which to date have not identified any medical issues of concern and will take a few days to rest and recover," he said.
"During this time, I will be acting as Premier and arrangements are being made to cover his absence from Parliament this week.
Mr Rockiff said an update on Mr Gutwein's health and return to work would be provided later in the week.
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