At least one person is dead and four injured after an explosion occurred at a nuclear waste site in southern France. The incident occurred on Monday at the Marcoule site and was caused by a fire near a furnace, French officials said. According to the country’s Agency for Nuclear Safety, there are no radiation leaks. While there are no nuclear power reactors at the Marcoule site, there is a pressurized water reactor that is used to produce tritium. The site is owned by French power utility company EDP. Officials said the furnace where the explosion occurred is used to melt waste. One of the injured was airlifted to hospital in Montpellier, while three others were treated at a hospital closer to the site.