ISLAMABAD: As many as two died out of four laborers who accidentally fell into a chemical mixed pond of a factory whereas the other two have been recovered in precarious conditions in Okara on Thursday. According to a private news cahnnel, the incident took place in the morning when two workers accidentally fell into a chemical pool while doing work whereas the other two also plunged into the pool while trying to rescue their companions. On the other hand, District Police Officer (DPO) said that investigation into the matter has been launched while he also assured to take action against the responsible people.