A post published on his Facebook page on Sunday showed the politician, accused of corruption and bribery in his home country, gathering in Kiev with family to celebrate Orthodox Easter.
Late last month, Petro Poroshenko Bloc MP Sergei Kaplin accused Yatsenyuk of having fled to Argentina after his resignation in mid-April, something Yatsenyuk's press secretary later denied.
Yatsenyuk, who served as prime minister of Ukraine since February 2014, following the Maidan coup d'etat which overthrew the unpopular but democratically elected government of Viktor Yanukovych, announced his resignation from the post on April 10, 2016. On April 14, Ukraine's parliament, the Verkhovna Rada, approved a new government, headed by Poroshenko ally Volodymyr Groysman. Prior to his resignation, Yatsenyuk's approval rating hovered in the low single digits.