LONDON -- Prince William says his grandfather Prince Philip is "OK" as the 99-year-old royal consort remains in a London hospital for rest and observation.
William was asked about Philip when he visited a coronavirus vaccination centre Monday in eastern England.
He said: "Yes, he's OK, they're keeping an eye on him."
Philip was admitted to the private King Edward the Seventh's Hospital in London on Tuesday after falling ill.
Buckingham Palace said the Queen's husband was expected to remain in the hospital into this week for a period of "observation and rest."
Philip's illness is not believed to be related to COVID-19.
Philip, who retired from public duties in 2017, rarely appears in public.
