Explosions were heard in Kiev, according to the publications "Public" and "Mirror of the Week".
According to the head of the city military administration Sergei Popko, air defense forces are working in the region. He urged residents to stay in shelters.
An air alert has been declared in Kiev and the region. Signals are also heard in Cherkasy, Poltava, Zhytomyr, Kirovograd, Dnipropetrovsk, Sumy, Kharkiv regions.
A few hours before that, explosions thundered in Sumy. Sumy region borders Kursk, where fighting has been going on since August 6.