Two people were killed and 12 wounded in Russian strikes on Sumy early on November 22, Artem Kobzar, the mayor of the northeastern Ukrainian city, reported in a video statement on Telegram.
"Several powerful explosions were heard in Sumy," he said in the video, adding that rescue teams, police, and ambulances were working at the site of the explosions.
Kobzar urged residents to take shelter, saying that air defenses were still engaging incoming drones in the morning. Ukraine's air force said Russian drone attacks were under way in four regions -- Sumy, Kyiv, Chernihiv, and Zhytomyr.
"A crisis management headquarters has been set up to address the aftermath of the emergency," he said, adding that more details about the location would be provided later.
Additionally, the acting mayor of Sumy mentioned that due to the ongoing threat of Shahed drone attacks, air defense operations are continuing in the city. He urged local residents to stay away from windows for safety.