MOSCOW, June 25 - Over 3 million people came from Ukraine to Russia in 2012 to work, to visit relatives or to study, Russian Federal Migration Service Chief Konstantin Romodanovsky said.

"In particular, we registered over 10 million entries of Ukrainian citizens to Russia last year. This is a fifth of all foreigners who come to Russia," Romodanovsky said at an international conference dedicated to Russian-Ukrainian relations.