A woman threw acid at her neighbour, also a woman, after a petty quarrel in the Ladhaywala area on Wednesday. Police said the two women had been quarrelling over a minor issue for the last three days. However, one of them turned violent on Wednesday and threw acid, severely injuring her neighbour. The victim has been identified as Najma Bibi. She was taken to a hospital in critical condition where doctors said that at least 70 percent her body had received severe burn injuries.