An 11-year-old girl, who was stabbed multiple times by a Class XI student in Belgharia on Wednesday, underwent head surgery at a private hospital off EM Bypass on Thursday, an official of the hospital said.

According to the official, the girl suffered injuries on her head, hands, shoulders and neck. She was admitted to the paediatric intensive care unit of the hospital and remained in critical condition.

However, the girl was responding to the treatment and her vitals were stable, the official added.

A senior officer of the Barrackpore Commissionerate on Thursday said the boy who had attacked the girl and her mother while they were walking home from school was also being treated at a hospital.

“Our officers have spoken to the boy. He had earlier professed his love for the girl but she had turned him down. On Wednesday, he had done the same and was turned down. The boy then hurled abuses at the girl after which she slapped him. He told us that he started stabbing her with a knife in a fit of rage,” said the officer.

According to the officer, they have started a case and have booked the teenager under attempt to murder charges.

“We will question him again once he is discharged from the hospital,” said the officer. The girl’s mother on Thursday said that she wanted the highest form of punishment for the teenager.

“I still cannot believe that the boy could do something like this. I want the highest form of punishment for him,” the mother said.