Officials in Kyiv reported Thursday a third round of Russian drone attacks in four days, with air defenses shooting down about 18 drones.

Serhiy Popko, head of the city’s military administration, said on Telegram that air alerts were in place for almost six hours and that none of the drones hit their targets.

Popko reported debris from downed drones hitting residential buildings in three districts in Kyiv, but he did not report any casualties.

Serhiy Lysak, governor of Ukraine’s Dnipropetrovsk region, said air defenses shot down five Russian drones. He said Russia also attacked the region with artillery, and that a post office, cathedral and power lines were damaged.

In Kherson, officials said Ukrainian forces shot down two Russian drones.

Russia’s Defense Ministry reported shooting down six Ukrainian drones Thursday, with intercepts taking place over the Belgorod and Bryansk regions and the Russian-occupied Crimean Peninsula.

The ministry also said it thwarted an attempted attack by sea drones that were headed toward Crimea.

Some information for this story was provided by Reuters.