Ukrainian military intelligence official, Vadym Skibitsky, has said Russia additionally deployed in Crimea a hundred of new type combat aircraft in Crimea.

"These are Su-27 and Su-30 aircraft, whose range allows them to operate throughout the Black Sea region and over almost the entire territory of Ukraine," he said.

Read alsoConvoy of military equipment spotted moving into Crimea across Kerch Strait Bridge (Photo, video)

According to Skibitsky, Russia has also reinforced its military grouping in Crimea with six modern submarines, capable of carrying Kalibr missile systems able to hit ground targets at a range of up to 1,500 kilometers.

In addition, Russian occupation forces have boosted defenses of the Crimean peninsula coast with 16 Bastion and Ball missile systems able to engage targets in almost the entire Black Sea region.