Britain's King Charles was hospitalized for observation on Thursday after experiencing side effects from medical treatment.
It is described as "temporary side effects", related to ongoing cancer treatment.
His program for Thursday afternoon and Friday has been cancelled.
"His Majesty has now returned to Clarence House and as a precautionary measure, tomorrow's program will also be postponed", the court announces.
The 76-year-old king has been treated for an unspecified type of cancer for over a year. He has continued to perform his royal duties, such as meeting the prime minister.
