Ukraine and Russia: What you need to know right now

Ukraine's state nuclear power company Energoatom said that a worker was wounded when Russian forces again shelled the Zaporizhzhia nuclear power plant, the biggest in Europe, on Saturday evening. The plant was captured by Russian forces in early March, but it is still run by its Ukrainian technicians. * Ukraine's Energoatom blamed Russia for the damage at the power plant on Friday.

Ukraine's state nuclear power company Energoatom said that a worker was wounded when Russian forces again shelled the Zaporizhzhia nuclear power plant, the biggest in Europe, on Saturday evening. ZAPORIZHZHIA PLANT

* The head of the International Atomic Energy Agency (IAEA) raised grave concerns on Saturday about the shelling the previous day at the Zaporizhzhia plant, saying the action showed the risk of a nuclear disaster. * Shells hit a high-voltage power line at the plant on Friday, prompting operators to disconnect a reactor despite no radioactive leak being detected. The plant was captured by Russian forces in early March, but it is still run by its Ukrainian technicians.

* Ukraine's Energoatom blamed Russia for the damage at the power plant on Friday. Russia's defense ministry accused Ukrainian forces of shelling the plant. GRAINS

* Four ships carrying Ukrainian foodstuffs sailed from Ukrainian Black Sea ports as part of a deal to unblock the country's sea exports, Ukrainian and Turkish officials said. FIGHTING/WEAPONS

* The Ukrainian military said in an update on Facebook on Saturday that Russian shelling was recorded in dozens of towns along the eastern and southern front lines. * The Ukrainian military said Russian forces tried to conduct assaults in six different areas in the eastern Donetsk region, all of which failed to gain any territory and were held back by Ukrainian forces.

HUMAN RIGHTS * The head of Amnesty International's Ukraine office has quit the human rights body in a disagreement with it after the group accused Ukraine's armed forces of endangering civilians by basing troops in residential areas during the Russian invasion.