Reports of landmines in a humanitarian corridor also come, as no less than five million Ukrainian refugees may enter the European Union if Russia's bombardment of Ukraine continues, the EU's top diplomat, Joseph Borrell, said. Heartbreaking images show civilians trying to flee their homes in Irpin, in the Kyiv region, as loved ones hold onto each other and people offer to help elderly citizens cross makeshift planks amid scenes of destroyed debris. This comes as more than 1.7 million Ukrainians fleeing Russia's invasion have so far crossed into Central Europe, the United Nation's refugee agency said today, as thousands more streamed across the borders. Poland – which has the largest Ukrainian community in Central Europe – has received more than 1 million Ukrainian refugees since the conflict began on February 24, with the milestone passed late last night. 'Today at 20:00 the number of people who escaped from Ukraine to Poland exceeded one million,' the Polish border guard service tweeted late on Sunday. 'This is a million human tragedies, a million people banished from their homes by the war.' A total of 1,735,068 civilians – mostly women and children, as men stayed home to fight – have so far crossed the border into Central Europe, the UNHCR said Russia calls its actions in Ukraine a 'special operation'. Red Cross volunteers working out of Mariupol also revealed that one of the route out of the city suggested by Russia on Sunday was covered in land mines.