Family members rushed to the side of Queen Elizabeth II after doctors said they were worried about the 96-year-old monarch’s health on Thursday, saying she would need to remain under medical observation. The Queen, Britain’s longest-serving sovereign and the world’s oldest monarch, has been suffering from what Buckingham Palace calls “episodic mobility problems” since late last year. “Following further assessment this morning, the Queen’s doctors are concerned about Her Majesty’s health and have advised her to remain under medical observation.” “The Queen also remains comfortable at Balmoral,” the palace said in a statement. Her eldest son and heir, Prince Charles, and his wife Camilla traveled to her Scottish home at Balmoral Castle, where she lives with his eldest son, Prince William, officials said. Last October, Elizabeth spent a night in hospital and has since been forced to curtail her public engagements. On Wednesday she canceled a virtual meeting with senior ministers after doctors advised her to rest. The previous day he had been photographed appointing Liz Truss as the country’s new prime minister at Balmoral. A palace source said family members had been informed and played down speculation that the monarch had suffered a fall. Elizabeth has been Queen of Britain and more than a dozen other countries since 1952 and earlier this year celebrated her 70th year on the throne. Truss said the entire country would be deeply disturbed by the news. “My thoughts – and the thoughts of people across our United Kingdom – are with Her Majesty The Queen and her family at this time,” he said. Lindsay Hoyle, the speaker of the House of Commons, interrupted an energy debate in parliament to say he sent his best wishes to the monarch. “Along with the rest of the country, I am deeply concerned by the news from Buckingham Palace this afternoon,” said opposition Labor leader Keir Starmer. (Reporting by Michael Holden; Editing by Kate Holton and Janet Lawrence)

The whole country will be deeply concerned with the news from Buckingham Palace this afternoon. My thoughts – and the thoughts of people across our United Kingdom – are with Her Majesty The Queen and her family at this time. — Liz Truss (@trussliz) September 8, 2022