<!– /11440465/Dna_Article_Middle_300x250_BTF –>The CBI questioned Ryan International School’s 16-year-old student on Thursday and took him to a shop from where he may have procured a knife to kill his Class II junior Pradyuman Thakur on the Gurugram campus two months ago. The agency apprehended the Class XI student late on Tuesday, in a sensational twist to the crime for which school bus conductor Ashok Kumar is in jail after being arrested by the Haryana police.On Friday, the CBI will take the juvenile to the school to reconstruct the murder that sparked outrage and triggered safety measures across campuses. The seven-year-old had been found with his throat slit outside a school toilet on September 8, sparking violent protests by parents and locals.The CBI refused to comment on a blood-stained knife that the Haryana police said it had found from the tool box of a school bus driven by Kumar. The agency said it has found the knife used in the crime and thrown in a commode.The CBI theory has questioned the investigation by the Haryana police which defended itself on Thursday. Gurugram Commissioner of Police Sandeep Khirwar said, “I am not aware of what CBI has found. We had the crime scene inspected by our forensic team.”He said the state police had investigated the case for 12-13 days and had not concluded anything. “Hope, CBI will bring justice to the family. There is a lot of speculation going on… let CBI investigate the case,” he said.He refuted the charge that that police had botched up the probe, saying that it was moving logically in the direction where the evidence led. He said the police was not given time to complete the probe.The suspect student was produced before a Juvenile Justice Board on Wednesday which allowed the police to question him. He was weak in studies and committed the crime to have school exams and a parent-teacher meeting postponed, said sources in the CBI, which took over the case on September 22 after a massive uproar.He confessed to his crime, in front of his father and an independent witness, the agency told the juvenile court.Teachers had noticed the suspect, reportedly under psychiatric evaluation over anger issues, bringing a knife to school four days before the murder, but the Gurugram police did not give any importance to this crucial bit of information, sources said.CCTV footage, in which the Class XI student was seen near the toilet minutes before the murder, was also ignored by state police.Pradyuman’s father Barun Thakur, an MNC executive in Delhi, said the family always suspected that the case was being mishandled and the bus conductor was arrested in a hurry. “We had been telling the police to question other people but they were focused on the bus conductor,” he said.