On the morning of Monday, January 17, Ukraine's former president, lawmaker Petro Poroshenko, arrived in Kyiv after spending nearly a month abroad. An estimated 3,000-4,000 people met him at Kyiv's Zhuliany Airport; some of his supporters carried Ukrainian flags and posters with pro-Poroshenko slogans. At passport control, Poroshenko was met by officials from Ukraine's State Investigation Bureau. His passport was taken away for around 15 minutes, but then returned to him. The state investigators attempted to serve Poroshenko with a subpoena but he refused to take the document. Poroshenko then proceeded to hold an impromptu rally, addressing his supporters gathered outside the airport and urging them to support him in court.