Britain's Queen Elizabeth II and Prime Minister Boris Johnson greet guests during a reception to mark the Global Investment Summit on Oct. 19. Photo: Alastair Grant/Pool/AFP via via Getty Images
Buckingham Palace said Thursday that Queen Elizabeth II stayed overnight at the private King Edward VII's Hospital for "preliminary investigations" before being released the next day, AP reports.
Why it matters: The queen, 95, is Britain's longest-lived and longest-serving monarch. She was last hospitalized in 2013 due to symptoms of gastroenteritis, according to the Washington Post.
What they're saying: "Following medical advice to rest for a few days, The Queen attended hospital on Wednesday afternoon for some preliminary investigations, returning to Windsor Castle at lunchtime today, and remains in good spirits,” Buckingham Palace said in a statement to the Post.
Worth noting: Queen Elizabeth lost her husband, Prince Phillip, 99, earlier this year.