In a shocking twist to the murder case of seven-year-old Pradyuman Thakur, the Central Bureau of Investigation today detained a Class XI student of Gurugram, Haryana's Ryan International School.

Sources say a Class 11 student is being suspected in the murder of Pradyuman Thakur, who was found with his throat slit on September 8 inside the school’s washroom.

Sources said the student was charged under Section 302 of the IPC and was taken in for interrogation by the CBI.

Reports claim that the student took this heinous step to allegedly postpone the exams.

Speaking to India Today, the father of the arrested Class XI student confirmed the detention but claimed there was a conspiracy to frame his son.

The father said his boy was questioned by the CBI for an entire day at the agency's headquarters in New Delhi before being detained. According to the father, his son was the first one to spot Pradyuman on the day of the murder.

Pradyuman’s body was discovered by fellow school students at around 8 am on September 8 with his throat slit and a knife near his body. Postmortem later revealed that an 18x2-cm neck-to-ear cut was what killed the child.

Gurugram police had on the same day arrested Ashok Kumar, a bus conductor with the school.

The most interesting part in the case is that the police had extracted a confession from Ashok Kumar and said that the boy had been killed for resisting sexual assault. Hence the arrest of the Class 11 student casts a shadow of doubt over Gurugram Police’s dedication towards the case. CBI has allegedly said that the conductor did not murder Pradyuman.

It was after sustained pressure from the parents that the ML Khattar government in Haryana transferred the murder case to the Central Bureau of Investigation.

Pradyuman’s father Varun Thakur blamed the Gurgaon-based school’s authorities for its carelessness. “I can only say that what happened was because of school’s carelessness. We never thought any student can be involved in this case,” he told CNN-News18.

However, the motive of the murder is not clear yet.