London, March 28 -- King Charles III was briefly hospitalized on Thursday after suffering side effects from his cancer treatment, according to a statement released by Buckingham Palace, The New York Times reported.

The palace said that Charles (76) has now returned to his residence in London, Clarence House, and all his public schedule for Friday would be cancelled as a precaution.

In February last year, the King said that he has been diagnosed with an undisclosed form of cancer and has been undergoing treatment since then. The palace did not mention the nature of the side effects. However, they said they were temporary and "required a short period of observation in hospital."

In recent months, King Charles has been following a vigorou...