MOSCOW, March 30. /TASS/. Six explosions were heard in Kharkov on Thursday night, the city’s Mayor Igor Terekhov wrote on his Telegram channel.

"By now, there have been six strikes on Kharkov," he wrote.

Earlier, the governor of the Kharkov Region Oleg Sinegubov said that explosions had been reported in the region.

At present, air raid alert is in place in the regions of Kiev, Poltava, Sumy, Kharkov and Chernigov. The Strana news portal reported that blasts had also been heard in the regions of Sumy and Chernigov.