Britain's Prince Philip, Duke of Edinburgh. AFP/Alastair Grant
LONDON - Britain's Prince Philip, the husband of Queen Elizabeth II, was admitted to a London hospital overnight as a "precautionary measure", Buckingham Palace said on Wednesday, with sources saying it was not due to coronavirus symptoms.
The 99-year-old was said to be "in good spirits" in the private King Edward VII Hospital in Marylebone, where the palace said he was taken on Tuesday evening after feeling unwell.
The Duke of Edinburgh, as he is formally known, "is expected to remain in hospital for a few days of observation and rest", the palace statement added.
Sources told AFP he was not taken in by ambulance and had felt well enough to walk into the hospital.
Prime Minister Boris Johnson's office said he had sent his "best wishes to the Duke of Edinburgh as he undergoes a few days of rest in hospital".
The prince and the queen (94) have been maintaining social distancing rules at Windsor Castle, because their age puts them at heightened risk from COVID-19.
The couple received their first vaccinations in January, the palace said in a rare public comment on the private health matters of the royal couple at the time.
Prince Philip retired from public duties in 2017 at the age of 96 following a two-night hospitalisation for an infection. He then had a hip operation in 2018.
In January 2019, he emerged unscathed after his vehicle was involved in a traffic accident that injured two people near the monarch's Sandringham estate in eastern England.
Philip spent four nights at King Edward Hospital in December 2019, where he was treated for what was described as a "pre-existing condition" and was discharged on Christmas Eve that year.
During the pandemic he has made few public or private appearances.
He attended the wedding ceremony of his granddaughter Princess Beatrice last July, shortly before celebrating his 73rd wedding anniversary.
The latest hospitalisation renewed concerns about Philip's health ahead of his 100th birthday in June this year.