"Hundreds of Rohingya rescued by Bangladesh and sent to a flood-prone island after being stranded at sea for weeks should be moved to existing refugee camps, the UN secretary-general said. Antonio Guterres made the appeal to Bangladesh's foreign minister in a letter that was obtained on Sunday by AFP news agency. More: Emergency teams race to contain virus spread in Rohingya camps First coronavirus case found in Bangladesh Rohingya refugee camps Bangladesh quarantines hundreds of Rohingya rescued from sea The Rohingya were rescued in early May after floating adrift in the Bay of Bengal and sent to Bhashan Char island - a silty strip of land that is vulnerable to monsoon storms. Dhaka has said the 308 were sent to the island rather than the camps in Cox's Bazar because authorities were afraid they might have the viral disease, also known as COVID-19. Guterres said the refugees should be moved to the camps after their time in quarantine is completed. Dhaka has not said how long the Rohingya will remain in isolation..."