Kiev is on GMT+03, so 2300GMT equates to 02:00 local time.MOSCOW/KYIV, June 6 (Reuters) - A major Soviet-era dam in the Russian controlled part of southern Ukraine was breached on Tuesday, unleashing floodwaters across the war zone in what both Ukraine and Russia said was an intentional attack by the other's forces.
Russian-installed officials in Kherson said Ukraine struck the dam at 2300 GMT several times, destroying the hydraulic valves of the hydroelectric power station but said the dam was not totally destroyed.
The Russian-installed governor of Crimea, Sergei Aksyonov, said there was a risk that water levels in the North Crimea Canal, which carries fresh water to the peninsula from the Dnipro river, could fall. Crimea, which Russia has held since 2014, had sufficient water reserves for the moment, and the level of risk would become clear in coming days, he said.
"At 02:50, Russian terrorists carried out an internal detonation of the structures of the Kakhovskaya HPP. About 80 settlements are in the zone of flooding," Zelenskiy said after an emergency meeting of senior officials.
A Ukrainian military spokesperson said Russia's aim was to prevent Ukrainian troops crossing the Dnipro River to attack Russian occupying forces.
The Zaporizhzhia Nuclear Power Plant, Europe's largest, gets its cooling water from the reservoir. It is located on the southern side, now under Russian control.
"Our current assessment is that there is no immediate risk to the safety of the plant," International Atomic Energy Agency chief Rafael Grossi said.
He said it was essential that a cooling pond be left intact as it supplied enough water for the cooling of the shut-down reactors.