Radon, a naturally occurring gas, comes from small amounts of uranium in rock and soil. Exposure to high levels of it can, however, cause lung cancer.

The Scottish Courts and Tribunals Service (SCTS) said action had been taken to deal with the radon.

An SCTS spokesperson said: “The safety of our staff and all who use our buildings is our primary concern. 

“SCTS executive directors visited Inverness Justice Centre on Friday to answer any questions from staff, judiciary and other people working in the building, following the discovery of elevated levels of radon in two rooms on the ground floor.

“Throughout all of this, SCTS has based its decisions on the expert advice we have received and will continue to do so.

“We have undertaken various measures to ensure the safety of all those who use the building, such as increasing ventilation throughout the building and increasing monitoring, while also considering what measures we can take longer term to address the underlying issue. 

“We will also continue to communicate regularly with the various organisations who use the building to keep them up to date.”