Britain's Prince Philip, 99, in hospital after feeling unwell

Prince Philip, Queen Elizabeth's 99-year-old husband, was admitted to hospital on Tuesday (February 16) as a precautionary measure after feeling ill with an ailment that is not related to COVID-19.

The prince, whose official title is the Duke of Edinburgh, walked unaided into the private King Edward VII Hospital in London after feeling unwell for a short period, a royal source said.

The queen, 94, remains at Windsor Castle near London, where the pair have been staying during Britain's coronavirus pandemic. 

Both received their first dose of the COVID-19 vaccine in January.

"The Duke's admission is a precautionary measure, on the advice of His Royal Highness's doctor, after feeling unwell," Buckingham Palace said in a statement, adding: "The Duke is expected to remain in hospital for a few days of observation and rest."

A royal source said Philip did not have a COVID-19-related illness and that it was not an emergency.