Buckingham Palace says that Queen Elizabeth's 90-year-old husband Prince Philip had a "good night" after being rushed to the hospital for heart surgery on Saturday.
Members of the British royal family visited Philip at Papworth Hospital in Cambridge.
Well wishers gathered outside to give their support.
Known for his outspoken and sometimes brusque manner, Philip is Britain's longest serving royal consort. He had surgery to fit a small tube to clear a blocked artery after suffering chest pains as the royal family prepared to celebrate Christmas.
Buckingham Palace said he would stay in the hospital "for a short period" under observation.
Deborah Lutterbeck, Reuters