Giedrius Misutis, spokesman for the State Border Guard Service, has told BNS that Kaminskas arrived in Lithuania on a flight from Istanbul.
Kaminskas showed border guards his invalidated Lithuanian passport and then tried to enter the country with his Russian passport, but was not allowed in because of entry restrictions for Russian citizens in place in Lithuania and other countries in the region since last autumn.
"After completing all the formalities, the border guards sent the person (...) back to Istanbul," Misutis told BNS on Monday.
The Lithuanian Interior Ministry said earlier this month that Kaminskas had lost his Lithuanian citizenship because he had acquired Russian citizenship and was not entitled to dual nationality.
The LRT Investigations Team has reported that Kaminskas is married to Yelena Kaminskas, formerly Shebunova, a Russian citizen. She is a former girlfriend of Shoigu and the mother of their two children. She also has two children from her marriage with Kaminskas.