KIEV, February 10. /TASS/. A grid failure has caused power outages on some of Ukrainian railroads, the national railways operator reported on Friday.

The company reported on its Telegram channel about five 5-minute train delays, with another three trains being more than 30 minutes late.

Besides, all of the country’s regions have been alerted for air raids.

Earlier on Friday, blasts were heard in Vinnitsa, Dnepropetrvosk, Kiev, and Kharkov, as well as in the Odessa Region and the Kiev-controlled city of Zaporozhye. Vital infrastructure and power facilities have been damaged in the Dnepropetrovsk and Khmelnitsky regions, as well as in Kharkov and Zaporozhye.

Air defense systems were activated in the Kiev Region, its administration said on Telegram. Ukrainian media reported about air alerts ringing out in the Kirovograd, Nikolayev, Poltava and Kharkov regions.