It was believed to be the work of La Cagoule terrorists. That does not prove that Mitterrand was a member of la Cagoule. During World War II, members of the Cagoule were divided. "La Cagoule" was organized into cells. The Cagoule was infiltrated by the French police. Bibby was credited with inventing the cagoule (as an outdoor garment) in the early 1960s. In 1965, the French cagoule brand K-Way was introduced. Finally, the Cagoule terrorist group attempted several attacks. The Cagoule far-right group even staged bombings to disrupt the government. The chemise cagoule covered all sexual areas, but left an opening for necessary contact. The Cagoule tried to infiltrate the International Brigades for the same purpose.