A Belarusian NGO on Tuesday accused the regime of strongman Alexander Lukashenko of being behind the murder of its head Vitaly Shishov, who was found hanged in a park in Ukraine's capital.

"There is no doubt that this is an operation planned by Chekists to liquidate a Belarusian who presented a true danger to the regime," the Belarusian House in Ukraine said in a statement, referring to security service agents.