A French prosecutor identified 22-year-old Maxime Hauchard as an executioner in the most recent ISIS video. French authorities have been tracking Hauchard for years, according to NBC News. Prosecutor Francois Molins said Hauchard converted to Islam at the age of 16 and attended an Islamic conference in 2012, which Hauchard claimed was not radical enough for him. A terrorism expert said French officials were in touch with foreign fighters who could confirm Hauchard was the one in the video. The video showed the beheading of American aid worker Abdul-Rahman Kassig and more than a dozen Syrian soldiers.
