Queen Elizabeth II spent a night in the hospital for tests after being forced to cancel a visit to Northern Ireland this week, Buckingham Palace said Thursday.

"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," a palace statement said.

Britain's domestic Press Association news agency said the trip to the hospital was unannounced as it was expected to be a short stay, and also to protect the 95-year-old monarch's privacy.

The overnight stay was for "practical reasons," it added.... Read More: VOA News