Three children drowned into an underground water tank of a building of Islmakot town here on Thursday. Two real brothers, Dev Kumar, 6 and Rajesh, 4 and their 7 years old cousin Manesh fell into the underground water tank of an under-construction building at Kolhi Muhalla of Islamkot and drowned. The incident took place while the ill fated children were playing there. Bodies were recovered and handed to the bereaved families.