Russia’s state news agency RIA Novosti said Ukrainian troops northwest of Ukraine’s second-largest city bombed Kharkov.
Ukrainian news portal Ukrayinska Pravda said the attacks had ignited a fire that disrupted broadcasts on Russian television channels.
Russian channels, which began broadcasting from Kharkov last week, returned to television after some time, reports RIA Novosti.
Russia has tried to tighten its grip on the city, although residents continue to take to the streets to protest the occupation.
On Wednesday, the Ukrainian army acknowledged the advance of Russian troops in eastern Ukraine after conquering several locations in the Kharkiv and Donbass regions.
Russian troops are advancing on the Izioum line, controlled by Moscow’s soldiers, towards Lyman and are also close to Severodonest, one of the most important cities in the region.
These points in eastern Ukraine are located near the localities of Velyka Komychouvakha and Zavody in Kharkov.