As reported by Censor.NET citing 112 Ukraine TV channel, this was announced by Minister of Justice Pavlo Petrenko.
"I think our law enforcement agencies and relevant intelligence agencies will scrutinize this correspondence. If it is authentic, it will also be attached to our international lawsuits as evidence that Russia is involved in activities to provide support for terrorists and separatists," Petrenko said.
According to the minister, "the style and way of thinking" of the disclosed papers is similar to that of Russian authorities.
"I was looking through these letters online. The law-enforcement agencies are to confirm their authenticity. In my opinion, the content of the correspondence is consistent with the Russian government's style and way of thinking. Therefore, I do not rule out their authenticity," the Justice Minister said.