Four private school teachers, including a principal, were killed while six others sustained injuries in an accident near here on Thursday. According to the Rescue 1122, a van of the private school carrying teachers was going to Sakhi Sarwar from DG Khan when it collided with a truck coming from the opposite side near Quetta Road Tommi Morr Toll plaza. As a result, four people, including the principal of the school and three teachers, died on the spot while six others received injuries. On information, the rescue teams reached the spot and shifted the bodies and the injured to the Teaching Hospital, DG Khan. The deceased were identified as Nosheen, Amjad, Kiran and Tahira. Sakhi Sarwar police had started investigation.