Armed assailants tried to kidnap the daughter and grandson of a French cryptocurrency boss in Paris, police said, in a brazen daytime attack that was caught on camera.

A wave of kidnappings and extortion attempts targeting cryptocurrency figures and their families is escalating across France and other European nations. Organized criminal groups are employing a chilling tactic,

On Tuesday, four masked men attacked the pregnant daughter of Paymium CEO Pierre Noizat, her husband and their child in Paris. France's interior held an emergency meeting with sector leaders on Friday,