Palace: Prince Philip, 98, admitted to London hospital as 'precautionary measure'

Prince Philip, husband of Queen Elizabeth II, has been admitted to a London hospital “as a precautionary measure,” Buckingham Palace said Friday.

The palace said in a statement the 98-year-old Philip was admitted to the King Edward VII hospital for observation and treatment of a pre-existing condition.

He had been at the royal family's Sandringham estate in eastern England, where the queen and her family usually spend Christmas. The 93-year-old queen traveled to Sandringham from London on Friday morning after attending the State Opening of Parliament in London on Thursday.

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Prince Philip, Duke of Edinburgh attends the Royal Windsor Horse Show 2019 on May 9, 2019 in Windsor, England. (Photo by Samir Hussein/Samir Hussein/WireImage)

The palace said Philip didn't travel by ambulance and it wasn't an emergency admission. The duke is expected to be in hospital for a few days.

Philip, also known as the Duke of Edinburgh, married Elizabeth in 1947 and is the longest-serving consort in British history.

He stopped attending public engagements in 2017.