(150814) -- BUDAPEST, Aug. 14, 2015 (Xinhua) -- A migration aid volunteer distributes food to illegal migrants in a public underpass designated as a transit zone at Keleti railway station in Budapest, Hungary on Aug. 13, 2015. Local authority of Budapest opened transit zones near the main railway stations, providing basic sanitary and hygiene services to migrants. Migration aid volunteers organised the operation of the transit zones and provided migrants with information and food. So far this year about 100,000 illegal migrants had crossed from Serbia into European Union border-country Hungary. (Xinhua/Attila Volgyi)