The U.N. refugee agency is warning that the increasing number of migrants from the Mideast seeking to go overland to Europe through the Balkans face growing risks of violence, abuse and accidents on the train tracks they follow, AP reported. The overland route from Greece through Macedonia and Serbia has soared in popularity over the past two years as migrants seek a less dangerous path than the sea crossing from North Africa to Italy. But the U.N. High Commissioner for Refugees' office said Friday that risks are rising along with the number of migrants using the route. UNHCR said the number of migrants registering their intention to seek asylum in the Western Balkans rose to 20,000 in 2014, and already this year over 22,000 have claimed asylum in Serbia alone.