LONDON (AP) — King Charles III was hospitalized briefly for side effects from his cancer treatment and canceled public appointments on Friday, a small setback in his more than yearlong battle with an undisclosed type of the disease.

The 76-year-old king smiled and waved to supporters from the backseat of a chauffeur-driven Audi as he left his residence at Clarence House the day after he was briefly kept at a private hospital in London for observation.

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