Over 30 foreign ships illegally visit Russia-annexed Crimea's ports last month

Of them, there were 23 Russian ships and 11 ships were sailing under the colors of the Republic of Palau, Sierra Leone, Togo, the Comoro Islands, and Tanzania.

In total, there were 77 illegal visits to the ports of Kerch and Sevastopol, it said.

Read alsoTwo Dutch companies taking part in Kerch bridge construction projectThe Ukrainian ministry reminds that the seaports in Crimea, namely the ports of Yevpatoria, Kerch, Sevastopol, Feodosia, and Yalta, are closed under a Ukrainian government resolution.

"Foreign vessels' visits to the closed seaports and the terminals located in Crimea and Sevastopol will be considered as a violation of international law that undermines the sovereignty of Ukraine and as a violation of the law that entails the liability of owners, operators and captains of the ships. This liability is also criminal," the ministry said.