Tikhiy Don (Silent Don), the ship of Russian coast guard, was spotted near Mariupol, the government-held port city in Donetsk region. Press officer of the Ukrainian military Olexandr Kindsfater reported this on March 30.
According to him, the ship performed radio-electronic surveillance at the distance of some 12 miles from the coast of Mariupol.
Kindsfater added that Ukrainian border guards keep an eye on the ship. Currently, it stays at a safe distance, but in case it approaches, the Ukrainian side will be ready to respond, the military spokesman said.