Armed pro-Russian separatists have forced the closure of Donetsk airport in eastern Ukraine, a day after they prevented a majority of the region's voters from taking part in presidential elections.
Earlier this month, the pro-Moscow rebels declared autonomous "people's republics" in the regions of Donetsk and Luhansk after holding makeshift referendums. They said the two regions, which include the Donbass coalfield, are no longer part of Ukraine.
Only about 20 per cent of the two regions' polling stations functioned in Sunday's presidential election and many voters stayed at home, fearful for their safety. No polling stations were open in the city of Donetsk, home to one million people.
The head of Donetsk airport's press service, Dmitry Kosinov, said dozens of armed representatives of the self-styled "Donetsk People's Republic" had come to the airport in the early hours of Monday morning to demand the withdrawal of Ukrainian troops.
The troops have been policing the perimeter of the Sergei Prokofiev airport.
"On the territory of the airport there are armed people, this is ample reason to halt our work on security grounds," Kosinov said in a statement, adding there had been no violence. It was not clear when the airport would reopen.
A Reuters reporter at the scene said Ukrainian police had blocked the road to the airport. There was no sign of any armed separatists or Ukrainian forces in the immediate vicinity.
Petro Poroshenko, who claimed victory in Sunday's presidential election after exit polls gave him an absolute majority in a first round of voting, has said tackling the separatist conflict in eastern Ukraine will be his top priority.