Dr Taweesin Visanuyothin, spokesperson of the Centre for COVID-19 Situation Administration, said several high-ranking civil servants are believed to be infected and said everybody at risk should report to public health officials immediately.

Meanwhile, Public Health Minister Anutin Charnvirakul is currently isolated and waiting for test results.

On Sunday, Veerasak had led Anutin and other public health officials to visit a hospital in Samut Sakhon.

Samut Sakhon governor tests positive, Anutin awaits results

Samut Sakhon governor Veerasak Vichitsangsri reportedly tested positive for Covid-19 on Monday and people who had been his close contact with him will soon be tested for the virus.