Norway’s longest-reigning monarch, King Harald V, has passed away at the age of 89, the royal palace confirmed on Friday morning.

The deceased sovereign, who had been receiving treatment for illness in recent months, was Europe’s eldest active ruler at the time of his death.

His son Prince Haakon has automatically ascended to the throne as King Haakon VIII.

The monarch’s education included attendance at Oxford University, where he pursued studies in social science, history and economics from 1960 to 1962.

His personal life reportedly included romantic rejections of several aristocratic women from across the continent before he chose to marry his childhood companion.

Born in 1937 in Asker, a suburb of Oslo, Harald represented a significant milestone in Norwegian royal history as the first prince delivered in the kingdom since King Olav IV in the 14th century.

His paternal grandfather, Haakon VII, had been selected for the throne following the 1905 separation of Norway from Sweden.

At just three years of age, Harald experienced the German invasion of Norway that marked the beginning of the Second World War.

To ensure his safety, the young prince was evacuated alongside his mother and siblings, Princesses Ragnhild and Astrid, first to Sweden before securing passage to America by sea.

Meanwhile, his father and grandfather established residence in Britain with the exiled Norwegian administration.

At six years old, Harald performed his inaugural public engagement, blessing newly delivered aircraft at a Norwegian air facility located in Canada.

The royal household returned to Norway in June 1945 following the conflict’s conclusion.

The future king subsequently completed his formal education through instruction at public institutions, the Norwegian military academy and the Oxford institution.