Movement of New Forces party leader Mikheil Saakashvili has called on his supporters to walk to the Ukrainian Verkhovna Rada building and demand that parliamentarians pass legislation on the president's impeachment.

"Let's go to the Rada all together and demand the president's impeachment," Saakashvili said to a crowd of his supporters and journalists on Kostelna Street in central Kyiv on Tuesday, after leaving a vehicle in which law enforcement agencies had planned to deliver him to investigators for questioning.

"I am calling on everyone to go to Maidan and begin the process of ridding the country of [President Petro] Poroshenko," he said.

After that, Saakashvili and his supporters walked down Kostelna Street toward Independence Square.