Ukrainian military officials report that over one hundred Russian soldiers have entered Kostiantynivka, a strategically important city in the Donetsk Oblast. The presence of Russian troops has been confirmed in the city center, prompting warnings of increased threats to the area. This infiltration represents a potential escalation of conflict in the region, as Kostiantynivka has been a frequent target of Russian shelling. Ukrainian defense forces are monitoring the situation and assessing the intent of the Russian deployment. The incursion raises concerns about potential offensives targeting remaining Ukrainian positions in the area and the safety of civilians. Further details regarding the circumstances of the infiltration and any resulting clashes are currently unavailable.