Paul-Philippe Hohenzollern, the grandson of former Romanian King Carol II, was detained in Paris on Monday morning. French police placed him under house arrest at the request of Romanian authorities.

Paul's father was recognised as Carol II's son in Portugal and France in 1955 ... But Michel, the country's last king, did not acknowledge him as part of the royal family before he died in 2017.

To its and his surprise, Rumania last week had a scandal in which King Carol had no part. In 1930 Rumania had a war scare over Soviet Russian machinations in Bessarabia (TIME, March 3, 1930 ...