Videos posted on Russian social media on Saturday showed a helicopter apparently being shot down over Russia's Bryansk region, bordering Ukraine.
The state news agency TASS cited an emergency services official as saying preliminary information indicated the helicopter's engine had caught fire before the crash near Klintsy, which is around 40km from the border.
📽️Russian Mi-8 helicopter was also shot down today in #Bryansk Oblast of Russia. It's the second friendly fire incident today.#UkraineRussiaWar pic.twitter.com/TWSvwQ89Sk
— MilitaryLand.net (@Militarylandnet) May 13, 2023
However, a video posted on the Russian pro-war Telegram channel Voyenniy Osvedomitel, which has around half a million followers, showed a helicopter high in the sky exploding, being thrown off course and then plunging earthwards in flames.
Comments accompanying the video, which Reuters could not immediately verify, said the craft, a Russian-built Mi-8 transport helicopter, had been shot down by a missile.
Other images posted by the channel showed wreckage in an agricultural field.
The Mi-8 has a wide range of military and civilian uses.
There was no immediate comment from Ukraine.