Having started treatment, Charles III spent the night at home in London. Buckingham Palace announced the health conditions of the sovereign without revealing what type of neoplasm it is.

Charles was seen in recent hours at Sunday mass at Sandringham church, near the royal country residence in English Norfolk, for the first time in public after leaving the clinic. Prince Harry has spoken to his father about his cancer diagnosis and will return to the UK to see him in the next few days, according to the BBC.