The King’s condition is not considered to be serious, the Royal Palace in Oslo said in a statement.
“The King is expected to be discharged by the weekend. The King will take two weeks’ sick leave. In this period, Crown Prince Haakon will be regent,” the statement read.
The 82-year-old King Harald was admitted to Oslo’s Rikshospitalet.
He will not attend an engagement at the men’s European Championships in handball in Trondheim of Friday, as previously planned, newspaper VG reports.
His attendance at the opening of the Johan Sverdrup oil field on Tuesday, where Prime Minister Erna Solberg was present, was also cancelled.
Prior to Christmas, King Harald was briefly laid low with a virus which prevented him from attending parliament on December 20th.