Lucknow: The principal of Brightland School, where a class 1 student was attacked with a kitchen knife on Wednesday allegedly by a senior school girl, has been taken into police custody.

Lucknow SSP Deepak Kumar, while talking to media, said that a girl student of class 6 is the suspect. "A kitchen knife was used for the attack. We have sent the hair found on the body of the child for a DNA test. The suspect will be produced before the Juvenile Justice Board. The principal has been arrested", Kumar said.

Uttar Pradesh Chief Minister Yogi Adityanath also met the injured boy in the King George`s Medical University (KGMU) today. The boy was attacked on Wednesday inside the school premises, but the matter came to light after the KGMU authorities revealed about it to the media. The police was informed about the incident by the school only when the reporters reached the trauma center.

UP CM Yogi Adityanath met the student of Class 1 of Brightland School who was injured after another student attacked him with a knife inside school premises yesterday in Lucknow. pic.twitter.com/qHJhobLHrR — ANI UP (@ANINewsUP) January 18, 2018

Meanwhile, the boy, who suffered deep wounds on his chest and stomach, is said to be out of danger.

The school's principal Rachit Manas was arrested by the police in connection with the incident that took place on January 16. "He has been arrested for negligence and hiding evidence. He did not inform the police of the incident," Senior Superintendent of Police Deepak Kumar said.

The police said the knife used by the 11-year-old girl, who was his senior in the school and was studying in class 7, has also been recovered and she will be produced before the juvenile justice board. "The hair recovered from the victim has been sent for forensic examination," Kumar said.

District Magistrate Kaushal Raj Sharma said that prima facie it appeared that someone might have told the girl that a holiday could be announced by the school authorities only if there was death of any student. "For getting the school closed, the girl attacked Ritik," police said.

The victim's father Rajesh had yesterday said, "I was informed by the school that my son is injured. He has been attacked with knife by a girl." The boy was rushed to the trauma centre.

Dr Sandeep Tewari, who was treating the boy, said the victim had deep wounds on chest and stomach that "seem to have been inflicted with a knife-like sharp object". An FIR was lodged in connection yesterday.

Panic gripped the school a day after the incident took place when other parents came to know about the matter and charged the school administration with trying to hush up the case. Taking note of the incident after the picture of the wounded boy went viral on social media and TV channels, District Inspector of Schools (DIoS) Mukesh Kumar Singh issued a notice to the school seeking clarification as to why legal action should not be initiated against it.

"The school has not provided information to our office regarding the incident after registration of the FIR. A clarification has been sought from the school," Singh said. Seven-year-old Pradyuman of Gurgaon's Ryan International School was found dead with his throat slit by a sharp-edged weapon in the school's washroom in September last year in which a 16-year-old student has been charged with committing the crime.