(FILES) In this file photo taken on August 05, 2019 the logo of European Union border force Frontex is pictured at the headquarters in Warsaw, Poland, on August 5, 2019. - The number of illegal border crossings detected on Europe's main migratory routes decreased by 85% from the previous month in April to around 900, Frontex announced on May 12, 2020. (Photo by Wojtek RADWANSKI / AFP)