Speaking to ANI, Verma said, "The CBI has not been able to present any evidence against him (Ashok). Also, the DNA has not matched".
Eight-year-old Pradyuman was found in a pool of blood with his throat slit inside his school, Ryan International in Gurugram.
The incident sparked a public outcry after which Gurugram police arrested Ashok, alleging him of killing the second standard student.
But the premier investigation agency, which is now probing the matter, gave him a clean chit and held a senior student responsible for the murder.
Meanwhile, the Punjab and Haryana High Court has adjourned the hearing of the case on the bail plea of the school's owners until 4pm today. (ANI)