The health of Norway's King Harald has "deteriorated" while in the hospital this weekend, the royal household said in a statement on Sunday.
Harald, 89, is being treated for haemolytic anaemia, a condition caused by the rapid destruction of red blood cells.
The disorder causes fatigue, weakness, shortness of breath and paleness.
"His Majesty the King's health deteriorated over the weekend. The King is receiving antibiotics for a bacterial infection in his blood, and has responded to this treatment," the palace said. His condition was stable, the statement added.
What else do we know about the health of Norway's king?
