Three more Thai islands have opened to vaccinated foreign tourists despite a nationwide surge in Covid-19 cases propelled by the Delta variant.
The islands - Koh Samui, Koh Tao and Koh Phangan - welcomed visitors as part of the kingdom's push to revive its battered tourism industry.
Thailand launched its "sandbox" scheme on 1 July, allowing vaccinated travellers to visit Phuket island. Tourists do not have to quarantine in a hotel but can not leave Phuket for two weeks.
Under today's expansion, tourists must stay at an approved hotel on Samui for a week and can leave their accommodation on day four.