Despite the fact that the situation in the area of the antiterrorist operation in the Donbass is generally controlled, steady trend towards its escalation is observed. This is what press officer of the Ukrainian mission to the Joint Center for control and coordination of the ceasefire and stabilization on the contact line said. The Ukrainian mission to the JCCC was particularly concerned about the September 11 incident, when 122mm artillery systems were used against Ukrainian army positions in the Mariupol sector for the first time since the imposition of full ceasefire.