"It is with deep sorrow that I learned of the passing of your beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh. May he rest in peace," wrote the monarch.
"On this sad occasion, I send Your Majesty, all members of your esteemed Royal family and the British people my personal condolences and deepest sympathy, together with those of the Moroccan people. Our thoughts are with you," said HM the King in the message.