One person died and another was seriously injured in an explosion on Monday in a site that treats nuclear waste in southern France. The country's nuclear safety body said that no radioactive leaks have been detected. The Nuclear Safety Authority said three other people suffered lesser injuries in the blast at an oven in the Centraco nuclear site.The Centraco site is located next to another nuclear site, Marcoule, located in Languedoc-Roussillon, in southern France, near the Mediterranean Sea. Officials from France's EDF power company, whose subsidiary operates Centraco, stressed that there is no nuclear reactor on the site and that no waste treated at the site of the explosion came from a reactor. Spokeswoman Carole Trivi said a fire broke out after the explosion, but it has since been brought under control.