This claim is true. On March 18, a Telegram Channel used by Vedomosti (Russia's once respected newspaper) shared a photo of King Charles in his ceremonial military uniform with the caption, "British King Charles III has died.” There was a document posted next to the photo that said, "The following announcement is made by royal communications. The king passed away unexpectedly yesterday afternoon.” Buckingham Palace released a statement to TASS, a Russian news agency, that read "We are happy to confirm that The King is continuing with official and private business."