Following this victory, separatist forces began to attack Ukrainian forces along the line of control in Donetsk and Luhansk oblasts. Particularly heavy fighting broke out along the Siverskyi Donets River, to the north-west of Luhansk city. Separatist forces captured a Ukrainian checkpoint at Krymske, attacked other checkpoints in the area, and shelled villages near Shchastia. Separatist forces also began an assault on the government-controlled town of Debaltseve in north-eastern Donetsk Oblast, barraging it with artillery fire. In addition, the DPR launched an attack on Mariupol from Shyrokyne during the morning of 24 January. A hail of Grad rockets killed at least 30 people, and wounded another 83. Heavy fighting continued in Debaltseve over the next week, resulting in many civilian and combatant casualties.