Prince Philip has been admitted to hospital as a 'precautionary measure' after feeling unwell

• Prince Philip has been admitted to hospital as a "precautionary measure."
• The Queen's husband, 99, is expected to stay in hospital for a few days.
• The duke's hospital admission is not COVID-19 related, it has been reported.

Prince Philip has been admitted to hospital as a "precautionary measure," Buckingham Palace said on Wednesday.

"His Royal Highness The Duke of Edinburgh was admitted to the King Edward VII Hospital in London, on Tuesday evening," a palace spokesperson said in a statement obtain by Insider. "The Duke's admission is a precautionary measure, on the advice of His Royal Highness's Doctor, after feeling unwell."

"The Duke is expected to remain in hospital for a few days of observation and rest," the statement added.

The duke traveled to the hospital by car and it was not an emergency or COVID-19 related, royal correspondent Victoria Murphy reports.

The Queen's husband, whose 100th birthday is this June, previously spent four nights in hospital and was treated for a pre-existing condition in December 2019.

In June 2017, the duke was admitted to King Edward VII Hospital as a precautionary measure to treat an infection.

Philip retired from royal life in 2017, although he has made several public appearances alongside the royal family in the years that followed, including at the royal wedding of Prince Harry and Meghan Markle in 2018.

The duke and Queen Elizabeth received the COVID-19 vaccination in January of this year.