Shortly after doctor expressed concern on British’ longest reigning sovereign Queen Elizabeth health, Prince Charles, the heir to throne along with his wife Camilla – Duchess of Cornwall, and grandson Prince William are said to have arrived at the Buckingham Palace.

The palace in a statement on Thursday said- Queen Elizabeth II is “under medical supervision” after her doctors expressed concerns over her health. They have recommended her to be medically supervised and her “close family” has been informed about the doctors’ concerns.

The announcement comes a day after the 96-year-old head of state, Britain’s longest-serving monarch, pulled out of planned meeting with her senior political advisers and was told to rest. The previous day she held audiences at her Scottish Highlands retreat, Balmoral, with outgoing prime minister Boris Johnson and appointed his successor, Liz Truss.

The queen in the recent times visibly frailer in recent months, and a succession of withdrawals from public engagements. She has taken to walking with the help of a stick and was also seen earlier this year at the Chelsea Flower Show touring the site in a motorized buggy.