The bodies of between 20 and 50 migrants were found in a truck in Austria on Thursday, highlighting the dark side of Europe's migrant crisis as regional leaders struggle to stem the massive flow of people desperately trying to reach the EU, AFP reports from Vienna. The gruesome discovery on a motorway near the Slovakia and Hungary borders was thought to be the worst tragedy on land in Europe's worst migrant crisis since 1945. Police said the vehicle -- which had the markings of a Slovakian poultry company and bore Hungarian number plates -- contained between 20 and 50 bodies. It was not yet clear how they had died.