Britain's Prince William tested positive for the coronavirus, apparently around the same time as his father Prince Charles earlier this year, BBC reported.
The report cited unidentified palace sources and The Sun newspaper, which said William kept his telephone and video engagements without revealing his diagnosis because he didn't want to worry anyone.
Kensington Palace declined to comment Sunday but did not deny the report.
The newspaper said William was treated by palace doctors and followed government guidelines by isolating at the family home Anmer Hall.