This is reported by local Telegram channels.
According to eyewitnesses, Zelensky's speech appeared on the screens instead of the usual program of Russian television channels, for example, STS and TNT.
Judging by the video recordings, the president's usual address to fellow citizens was broadcast in Ukrainian without translation into Russian.
The signal periodically disappeared and was restored.
Oleg Kruchkov
, an adviser to the head of Crimea on information policy
, explained the appearance of the Ukrainian president on the air as a hack carried out with the support of the US.
"At the very beginning of the special operation, the Americans gave the Ukrainian special services access to all the software codes of the most common "broadcasting stations" through which TV channels broadcast on the Internet.
Cable operators often take the signal from the network.
When it's bad at the front, Ukrainians break Internet broadcasting," RBC quoted Kruchkov as saying.
The Belgorod authorities reported on the unauthorized replacement of the signal from the satellite.
Since the beginning of Russia's military invasion of Ukraine, Uladzimir Zelensky has been speaking on Ukrainian television every evening with an address to the people, informing citizens about the situation on the fronts and in the rear.