The crime situation in Uttar Pradesh touched a new low when four sisters, all school teachers at Kandhla in Shamli district, were subjected to an acid attack by two motorcycle-borne unidentified young men on Tuesday. The condition of one, Isha, who has been referred to a hospital in the Capital, is stated to be critical.

State Inspector-General (Law and Order) R. K. Vishwakarma told journalists on Wednesday that the incident took place when the four sisters -- Qamar Jahan, Sonam, Isha and Ayesha -- were returning home from Hindu Inter College in Kandhla.

At Chaar Khamba on Kandhla bypass they were accosted by two men on a motorcycle, who threw acid on them. All the four were injured in the acid attack. While Isha was shifted to Sir Ganga Ram Hospital in Delhi, Qamar Jahan has been admitted to District Hospital in Shamli. The two other sisters went home after receiving first aid treatment, Mr. Vishwakarma said.

No arrests have been made.

A family member of the sisters who accompanied Isha and her mother to Delhi said: “If we knew who did this, we will kill them. The laws and rules can wait, these men deserve to die.’’

Dr. Mahesh Mangal, chairman of the Department of Plastic Surgery at SGRH, said: “Isha was brought here late last evening with extensive burns injuries. The skin on her eyelids, face, neck and chest has melted because of the acid attack. Her vision in the left eye is seriously impaired and doctors performed a surgical procedure today. We still have to wait and see how the eye responds. We are also treating the victim with antibiotics to ensure that no infection sets in.’’