“Explosions were heard in kyiv,” the post said, published at 03:10 Moscow time.
The TV channel later reported repeated explosions in the capital, RIA Novosti reports.
The air raid alert for the city was announced at 03:03 Moscow time.
In addition, an air raid alert has been sounded from 02:27 Moscow time in the Rivne, Ternopil, Chernivtsi and Lviv regions of Ukraine.
It was previously announced in Odessa, Vinnitsa, Zhytomyr and Khmelnytsky regions.