The reelection campaign of President Petro Poroshenko is utilizing the services of Ukrainian digital agency Postmen to run a “black PR” ad campaign against election frontrunner Volodymyr Zelenskiy on social media, according to an investigation by TheBabel, a news site with ownership ties to oligarch Ihor Kolomoisky.

While it is impossible to know the exact cost of the campaign, TheBabel estimates that the campaign of Facebook ads in just five groups cost at least Hr 2 million (roughly $75,000).