Norway's King Harald V has died at the age of 89, after he was taken to hospital last week for treatment for a rare blood condition.
The palace in Oslo said he passed away peacefully at 06:35 local time (04:35GMT) on Friday at the national hospital in Oslo. The royal flag on the roof of the palace has been lowered to half-mast.
In the 24 hours leading up to his death, members of the royal family had visited the king, and crowds had laid flowers at the palace.
Harald was Norway's first king born in Norway since the 14th Century. He has been succeeded by his son Haakon, 53, who will hold an extraordinary council of state with the government later on Friday.
King Charles III sent his "most heartfelt condolences", while King Carl XVI Gustaf of Sweden remembered "a good friend to me, my family and to Sweden", and wished his godson Haakon "success and good fortune".
After 35 years on the throne, Harald will be remembered as a popular and reforming figure who modernised the monarchy, broke with tradition by marrying a commoner and served as a unifying figure at Norway's most difficult moments.
Royal observers say he was down-to-earth, respected and beloved, describing him as a "grandfather" of the nation and the "People's king" - a title also used by his father King Olav V.
In the wake of the 2011 bomb and gun attacks on Oslo and the island of Utøya, Harald appealed to Norwegians to support each other and not "let fear take over".
More recently, Harald and his family faced health challenges and scandal, especially over his daughter-in-law Mette-Marit's association with the late sex offender Jeffrey Epstein, and her son Marius Borg Høiby's conviction for rape.
