MOSCOW, April 17 /ITAR-TASS/. Russian railways have warned passengers of Russian trains bound for Ukraine that men holding Russian passports may have problems in entering Ukraine.

“A report which Ukraine’s State Border Service published on its official website on April 17, 2014 warns that Ukraine is tightening border control at checkpoints on the Russian-Ukrainian border,” the Russian Railways Company said in a report received by Itar-Tass on Thursday.

“In this connection, entry restrictions are possible for men who are citizens of Russia,” the company said.

The Russian Railways Company recommends its passengers to carefully plan their trips.