"Radical Party faction will initiate the procedure of impeachment of President Poroshenko as prescribed in Article 111 of the Constitution of Ukraine," the statement published on the Facebook page of Radical Party head Oleh Lyashko reads.
According to the party, registration of an offshore company by Poroshenko constitutes avoidance of taxes, corruption, failure to declare the property as well as abuse of president's functions.
The party added that NABU's refusal to investigate the allegation "highlightes its dependence on government and imitation of anti-corruption fight."
The alleged documents obtained by the German newspaper reportedly provide information on current and former leaders, as well as celebrities and others who allegedly laundered billions of dollars, evaded taxes and dodged sanctions with the help of shell firms abroad.
Mossack Fonseca responded by refusing to validate the information contained in the leaks and accused reporters of gaining unauthorized access to its proprietary documents. It warned that using unlawfully-obtained data was a crime that it would not hesitate to punish by criminal and civil means. Representatives of the above mentioned officials weren't available for immediate comment.