The tiny and extremely rich European nation of Liechtenstein is mourning the loss of a member of its royal family, Prince Constantin.
The cause of death was not shared for the 51-year-old, who passed away unexpectedly.
He was the youngest son of the reigning Prince of Liechtenstein, Hans-Adam II, and seventh in line to the throne.
The prince leaves behind his wife, Princess Marie, and their three children, Prince Moritz, 20, Princess Georgina, 18, and Prince Benedikt, 15.
After studying law in Salzburg, Prince Constantin took on management roles at Liechtenstein Group, the largest royal family-owned private banking and asset management group in the world.
He also ran the Prince of Liechtenstein Foundation, which controls nearly all of the royal family's wealth, estimated at roughly $6 billion.
The family's property includes "one of the largest private art collections in the world, the LGT Group, a museum, the Vaduz Court Winery and various real estate," local newspaper Vaterland reported.
A minute's silence was observed in the state parliament in tribute to the departed prince.
Bishop Benno Elbs, the Apostolic Administrator of the capital Vaduz, sent his condolences to the royal family and urged the people of Liechtenstein to pray for the prince.
"This afternoon, at 15 p.m., the bells rang in all the parish churches of the archdiocese," Elbs said.
"I invite all the faithful of the Principality to join in praying for Prince Constantine and thus to express their attachment to the Princely House. I wish Prince Hans-Adam II, Princess Marie, the children and all those who mourn the deceased much strength and comfort in the hope of the resurrection."
"They may be supported by the many people who pray for the deceased throughout the Principality. May God grant Prince Constantine eternal rest."
Liechtenstein was formed in 1719 as a principality of the Holy Roman Empire, eventually gaining independence in the 19th century after the wars of Napoleon.
The Princely House of Liechtenstein is one of the oldest royal families in Europe. Dating to the 12th century, the family takes its name from a castle near Vienna, Austria.
Liechtenstein is one of the wealthiest countries on the planet, per capita.
The German-speaking, landlocked constitutional monarchy is situated between Austria and Switzerland and is one of the smallest countries in the world, with an area of just 62 square miles and a population of about 40,000.