(Reuters) -Some 160 people who applied for asylum at Finland's eastern border last year have since disappeared, amid a sudden surge of asylum seekers arriving via Russia, Finland's immigration authority said. Finland closed its eastern border with Russia late last year amidst a growing number of arrivals from countries including Syria and Somalia. The immigration authority Migri said it got 1,323 asylum applications at the eastern border between August and December last year, about 900 of those in November and more than 300 in December.