RM and Jin were diagnosed with COVID-19 on Saturday evening, the Big Hit Music agency said in a statement. It earlier said another member, Suga, tested positive for the virus on Friday.
All three took their second jabs in August, the agency said.
The BTS is a seven-member boyband. The four other members are J-Hope, Jungkook, V and Jimin.
According to the agency, RM has exhibited no particular symptoms while Jin is showing mild symptoms including light fever and is undergoing self-treatment at home. The agency said Friday that Suga wasn’t exhibiting symptoms and was administering self-care at home in accordance with the guidelines of the authorities.
RM had tested negative after returning from the United States earlier this month following his personal schedule there. But he was later diagnosed with the virus ahead of his scheduled release from self-quarantine, the agency said.