CBRN event in Ukraine on Fri 26th September 2025

26th September 2025

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International Atomic Energy Agency (IAEA) experts stationed at the three-unit South Ukraine nuclear power plant were told that 22 unmanned aerial vehicles were observed on Wednesday night and Thursday morning within its monitoring zone, "some coming as close as half a kilometre from the site", the agency said. "From their accommodation near the plant, IAEA team members heard gunfire and explosions around 01:00 am local time and today (Thursday) they visited the location where one of the drones had come down, observing a crater measuring four square metres at the surface and with a depth of around one metre," the agency's statement said. "Once again drones are flying far too close to nuclear power plants, putting nuclear safety at risk. Fortunately, last night’s incident did not result in any damage to the South Ukraine Nuclear Power Plant itself. Next time we may not be so lucky. I continue to urge both sides to show maximum military restraint around all important nuclear facilities," IAEA Director General Rafael Mariano Grossi said. "For more than three and a half years, the IAEA has been doing everything in its power to help prevent a nuclear accident during this devastating war. We will only be able to say that our mission was successful if the war ends without a serious nuclear accident. Our indispensable work is far from finished." Meanwhile Zaporizhzhia Nuclear Power Plant has been without external power for more than 48 hours and has been relying on its fleet of emergency diesel generators. The IAEA said "the plant said it has the necessary spare parts and personnel to repair the line once the military situation permits. Ukraine has informed the Agency that it is also prepared to repair damages to a backup power line, when the military situation permits". Following the loss of off-site power all 18 available emergency generators started operating, with the number reduced to those required to provide power to the site - seven - helping to preserve the diesel fuel. The IAEA has been told previously that 20 days' worth of fuel was stored at the site. Zaporizhzhia Nuclear Power Plant has been under Russian military control since early March 2022 and is on the frontline of Russian and Ukrainian forces.

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Ukraine (UKR)

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