Queen Elizabeth II's husband has been taken to the hospital after experiencing chest pains, British royal officials said Friday.
Buckingham Palace said Prince Philip, the Duke of Edinburgh, was taken from Sandringham, the queen's sprawling estate in rural Norfolk, to the cardiac unit at Papworth Hospital in Cambridge for "precautionary tests."
A hospital spokeswoman referred all calls to the palace.
Philip, who is 90 years old, was at Sandringham for the royal family's Christmas festivities.
The royals will celebrate a traditional Christmas this weekend, followed by a year's worth of festivities to mark the queen's 60th year on the throne.
Elizabeth and Philip are planning to mark the event with a series of tours throughout England to culminate with a celebration in London in early June that will include an unprecedented pageant on the River Thames with up to 1,000 boats taking part.
Most of the senior royals, including Prince William and his wife, now formally known as the Duchess of Cambridge, will be dispatched across the globe to help the aging monarch celebrate her Diamond Jubilee.