The staff of Separate Check Point “Kyiv” found passport documents not belonging to the citizens travelling by transit through Ukraine. Thus, three citizens from Iran were detained in Boryspil Airport having passports, which contained the signs of partial forgery. Border guards doubted in the validity and belonging of these documents to their bearers. As it was established in the course of filtration measures the citizens of Iran arrived by the flight from Istanbul. Then, they planned to get to Great Britain in the search of better life. The foreigners purchased the passports of the citizens of Greece for their trip to Turkey. They paid 18 000 euro for services on receiving passports with constituent data page replaced. So far, their return is already planned back to Istanbul.