The backup power line at the Russian-held Zaporizhzhia power plant in Ukraine has been disconnected to extinguish a fire, officials said on Monday. “Due to a fire caused by shelling, the [backup] line was disconnected, that is the last line linking the ZNPP/ZTPP hub to the power system of Ukraine.” As a result, the plant’s sixth and last functioning reactor was disconnected from the grid, Ukrainian operator Energoatom said. However the International Atomic Energy Agency (IAEA) said the line itself was not damaged. “The ZNPP continues to receive the electricity it needs for safety from its sole operating reactor,” it said. The back-up line “will be re-connected once the fire has been extinguished”, the UN nuclear watchdog added.