Thick, black smoke pouring from one of the cooling towers at Ukraine’s Zaporizhzhia nuclear power plant over the weekend raised alarm about safety at the facility as the military conflict with Russia continues.

On-site staff from the International Atomic Energy Agency witnessed the smoke and reported hearing multiple explosions at Zaporizhzhia, which is the largest nuclear plant in Europe and one of the largest worldwide.

Explosions near the Khmelnytskyi nuclear power plant in western Ukraine early Wednesday shattered windows at the facility and temporarily cut off power to some off-site radiation monitoring stations, the International Atomic Energy Agency reported on October 25.

The latest news on Ukraine’s Zaporizhzhia nuclear power plant—under occupation by the Russian military since early March—sparks some hope, but also more anxiety.

The good: This morning, Russia requested that the United Nations Security Council hold a meeting tomorrow on the situation at the six-unit pressurized water reactor plant, according to RIA Novosti, a Russian state-owned news agency. The RIA report cited a post via the Telegram messaging app from Dmitry Polyansky, Russia’s first deputy minister at the UN. In the post, Polyansky said the meeting is scheduled for “22:00 Moscow time on August 23.”