Ukrainian President Volodymyr Zelensky on Thursday said his country had "nothing to do" with the presumed death of Wagner chief Yevgeny Prigozhin in a plane crash, instead implying the Kremlin's responsibility.

"We have nothing to do with this situation, that's for sure. I think everyone knows who this concerns," he told reporters a day after a private jet on which Prigozhin was registered as a passenger crashed between Moscow and Saint Petersburg.