(ANSA) - BELGRADE, FEB 19 - Nearly 2,200 detections of irregular border crossings by migrants and refugees were registered on the Western Balkan route in January, down 14% from January 2020, Frontex informed. The number of illegal border crossings at Europe's external borders in January fell by nearly half from a year ago to nearly 5,800, according to Frontex preliminary calculations. (ANSA).