King Charles III's cancer “was detected early,” says the Prime Minister of the United Kingdom. Rishi Sunak's remarks offer new details about the king's condition, as Prince Harry arrives home to see his father and Prince William, heir to the throne, prepares to take on some of the monarch's public duties.

Buckingham Palace announced in a statement on Monday that a “form of cancer” had been detected while the king was undergoing hospital surgery for a benign enlargement of the prostate.