One Ukrainian solder was injured in the assault in the town of Artemivsk, the ministry said in a statement.Security forces responded and fought off the attack. The military facilities are under the control of the Ukrainian army, the ministry said.Ukraine's Interior Minister Arsen Avakov said on his Facebook page that the group of about 70 attackers were pro-Russian militants.He accused them of trying to take weapons from the military unit.In the eastern city of Mariupol, the military has retaken control of the city hall in the eastern Ukrainian city of Mariupol, the interior minister said Thursday.Interior Minister Arsen Avakov said on his Facebook page that there were no casualties and the interior ministry was preparing the premises that employees can return to work.But a pro-Russian protestor in Mariupol contradicted him.An assault on the city hall failed to dislodge the protestors, who still occupy it, she said. Some of the occupiers were injured while they fought off the attackers, she said.(CNN)ANN.Az