4 persons were killed while 1 got serious injuries when a dangerous building of government school of Chak No 237JB collapsed. According to reports, some villagers are working voluntarily to repair school building, when a part of building collapsed suddenly. Resultantly, Muhammad Saleem and Nasir Hussain died on the spot, while Liaqat and Naeem Ahmad died in Allied hospital, injured Suny reported to be serious. Investigations are in progress.