Rafael Grossi, head of the International Atomic Energy Agency (IAEA), said on Friday that the number of attacks on the Russian-controlled Zaporizhzhia nuclear power plant in Ukraine had increased, Russia's TASS state news agency reported.
Grossi was speaking after holding talks in Moscow with Alexei Likhachev, head of Russian nuclear corporation Rosatom.
Russian forces took control of the plant soon after the start of the war with Ukraine in 2022 and Moscow has said the Zaporizhzhia region, which it does not fully control, is now part of Russia, an assertion which Kyiv rejects.
Rosatom said in a statement after the Grossi-Likhachev talks that Ukraine was constantly carrying out attacks on Energodar, the closest town to the nuclear plant.
But Grossi was quoted by TASS as saying that it was impossible to determine which side was carrying out the attacks based on the examination of drone fragments.
"The small fragments of plastic or wood left by the alleged drones do not allow us to speak about the origin of these fragments. However, I would like to assure you that I am raising these issues at the highest level of international discussions," Grossi was cited as saying.
India capped airfares on Saturday as hundreds of passengers gathered outside Bengaluru and Mumbai airports after IndiGo cancelled 385 flights on the fifth day of a crisis at the country's biggest airline that has crippled air travel.
Pakistan and Afghanistan exchanged heavy fire along their border late on Friday, officials from both countries said, killing at least five people amid heightened tensions following failed peace talks last weekend.
Negotiations on consolidating the US-backed truce in the war in Gaza are at a "critical" moment, Qatar's Prime Minister Sheikh Mohammed bin Abdulrahman al-Thani said on Saturday.
Residents in the Indonesian region of Aceh Tamiang climbed over slippery logs and walked for about an hour on Saturday to get aid, as the death toll from floods and landslides that hit Sumatra island this month rose to more than 900 people.
A railway hub near Kyiv was attacked during a large-scale Russian drone and missile attack that damaged the depot and railway carriages, Ukrainian state railway company Ukrzaliznytsia said on Saturday.