MOSCOW, July 31. /TASS/. The air alert was canceled in all regions of Ukraine, according to the official air raid alert resource.

It lasted from about half an hour to 1 hour 45 minutes in various regions of the country.

According to the mayor of the city Igor Terekhov, damage to "non-residential premises" and a fire was reported preliminary, and a fire broke out in them.

Earlier, RBC Ukraine reported that explosions were heard in Kharkov.