Russian servers of radio stations and television channels have been hacked in attempt to broadcast fake alerts of air strikes in Moscow, Russia’s emergency services said on Thursday.
The incident followed a series of similar incidents in other parts of the country.
According to media reports there were even reports that regular television programming was interrupted with a stern warning urging people to seek shelter immediately.
Local officials said a similar message was broadcast in the Sverdlovsk region in the Urals.
In February, a false warning about the threat of a missile strike was also broadcast by radio stations in many Russian regions.
The broadcast was reportedly heard in cities in the western part of the country and in the Urals, and officials said at the time that the incident was caused by a cyberattack.
In January, hackers briefly hijacked television signals in Crimea and the Belgorod region, which shares a border with Ukraine, and broadcast an excerpt from a speech by Ukrainian President Volodymyr Zelensky.
In February, two Crimean radio stations stopped broadcasting briefly, and a speech by Kyrylo Budanov, the head of Ukraine’s military intelligence, was broadcast.