New Delhi: The CBI has told a juvenile court that class 11 student of Gurugram's Ryan International School, apprehended on Wednesday for allegedly killing a seven-year-old student, has confessed to his crime in front of his father and an independent witness.

In its note seeking remand of the 16-year-old student from the juvenile court in Gurugram yesterday, the agency said that his custodial interrogation was needed to ascertain if there were other people involved in the crime. 

The CBI told the court that, it also wants the teenager to identify the shop from where he had purchased the knife used to slit the throat of Pradhuman, a Class 2 student, on September 8.

The CBI said, the interrogation was needed to reconstruct the scene of crime, to unearth conspiracy, if any, and to collect any other evidence related to the case.

In a sensational twist to the case, the agency announced yesterday that it had apprehended a senior student of Ryan International School on Tuesday night in connection with the murder of Pradhuman rejecting the Gurugram police's theory that the killing was the handiwork of school bus conductor Ashok Kumar. 

The CBI has said that there was no evidence against Kumar so far.

According to the agency, the Class 11 student, believed to be weak in his studies, allegedly slit Pradyuman's throat to get the school to declare a holiday in order to defer a scheduled parent-teacher meeting (PTM) and an examination.