According the deputy commissioner of police, legal experts were consulted "since an offence was made out and there was a victim", and a case of rape under the Protection of Children from Sexual Offences (POCSO) Act was registered.
In a statement to the media, the girl's mother said that she has asked the school authorities to sack the principal, the teacher concerned and the counsellor, issue a public apology on Facebook and refund her two years' school fee with interest.
According to the mother, the child told her that a boy from her class opened her trousers and touched her undergarments.
The girls mother had yesterday approached the police and alleged that her daughter was "inappropriately touched" by a classmate.
According to the victim's mother, she came to know about the incident after her daughter returned from school and narrated what happened to her at night while writhing in pain because of "some injuries she had sustained in her private parts". "This is due to the teacher's irresponsible behaviour", mother of the victim said. The boy kept hurting her allegedly because there was no one around at the time to stop him or hear her. "We are examining those provisions, even as we are handling the matter with utmost sensitivity", Delhi Police spokesperson Dependra Pathak told mediapersons. She then told her parents of the assault.More news: CBS and Dish Network reach deal ending retransmission dispute
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Her mother said the boy unbuttoned her daughter's trousers, touched her bloomers and put his finger inside.
The mother of the victim is demanding action against school for dereliction of duties but no case of criminal negligence has been registered against the school so far.
The school authorities, however, denied the allegations of negligence and non-cooperation in the complaint filed by the mother.
However the school's lawyer maintains that an ayah was present in every washroom of the school.
Dr. Samir Parikh, the director of Fortis Healthcare's department of mental health and behavioral sciences told Hindustan Times, an Indian newspaper: "We must understand that it is absolutely not possible for a 4-year-old to understand sexual behavior".