As protests grow against the CBSE paper leak, the Delhi Crime Branch on Friday questioned 10 more people and 'interacted' with the CBSE controller of examinations, Delhi Police said.
Since Thursday, the police have questioned 35 people, including a coaching centre's owner, 18 students and some tutors, in connection with the case, an official privy to the investigations said.
The Class-X mathematics and Class-XII economics examinations were held on March 28 and March 26 respectively. Following the reports of the leak of the papers, the Delhi Police Crime Branch is investigating the case. However, protest against the CBSE chairperson and demand for justice continued on Friday.
On Thursday, Police personnel also "interacted with the CBSE controller of examination for two hours" to understand the process of conducting exams, he said.
The official said things like how the paper is set, details of where the question papers are kept and how they are distributed to various examination centres were discussed.
The Delhi Police has registered two cases. The first case in connection with the leak of the economics paper was lodged on March 27 and the case pertaining to the mathematics paper was lodged on March 28, following a complaint by the regional director of the CBSE.
The cases were registered on charges of criminal breach of trust, cheating and criminal conspiracy.
In the complaint pertaining to the mathematics paper, the board has said that a day before the exam, an e-mail was received on the CBSE chairperson's official ID informing about the leak, the officials said.
In the mail the sender had stated that the mathematics paper was leaked on WhatsApp and that it should be cancelled, they said.
The mail also contained attachments of the handwritten mathematics paper allegedly leaked on WhatsApp, according to the complaint.
A Special Investigation Team (SIT) comprising two deputy commissioners of police, four assistant commissioners of police and five inspectors has been set up to investigate the matter. The team is being supervised by the joint commissioner of police (crime).
(With inputs from agencies)