King Charles III has broken his silence on brother Andrew Mountbatten-Windsor's arrest on suspicion of misconduct in public office. "I have learned with the deepest concern the news about Andrew Mountbatten-Windsor and suspicion of misconduct in public office. What now follows is the full, fair and proper process by which this issue is investigated in the appropriate manner and by the appropriate authorities. In this, as I have said before, they have our full and wholehearted support and cooperation," Charles, 77, said in a statement issued by Buckingham Palace on Thursday, February 19.