Russian aerial attacks overnight killed at least two people in the southern Ukrainian region of Kherson, officials said Thursday. Kherson Governor Oleksandr Prokudin said on Telegram his region came under attack by Russian drones and shelling, and that one other person was injured.

Russia said it was hit by a “massive” drone attack overnight Tuesday, hours ahead of critical talks between officials from Washington and Kyiv.

Ukraine launched its biggest drone attack on the Russian capital on Tuesday with at least 91 drones targeting Moscow, killing at least one person, sparking fires, closing airports and forcing dozens of flights to be diverted,