The suspects are said to have leaked the question paper of the Science exam on the day of the exam which was on April 11.
Recoveries made on the premises included Rs 2.92 lakh in cash, seven walkie-talkie sets and more than 100 GPS devices.
Anand Gaurav alias Pintu Yadav is, however, evading arrest.
Narayana was the founder-chairman of Narayana Educational Institutions which has its branches in AP, Telangana and other States.
The surveys were conducted not by the YSRC cadre but a third party, the sources said, indicating they are more or less reliable.
Heads of corporate schools in Tirupati bribed govt teachers to leak question papers from the exam hall, say police.
The principal of a school, whose two teachers were arrested for their alleged role in leaking class 12 economics paper, was grilled today for over six hours by the police.
The CBSE sent a confidential note to all examination centres in Delhi on Saturday, which carried a set of ten instructions to be followed to introduce the new system.
The Mother Khajani Convent School, whose two teachers were arrested by the Delhi Police in connection with the Class 12 economics paper leak, is under the scanner.
Earlier in the day, the Delhi Police arrested two teachers of a private school and a tutor for involvement in the leak of the class 12 economics question paper.
The accused were identified as Rishabh and Rohit, teachers at a private school, and Touqeer, a tutor at a coaching centre in Bawana.
The Class 12 Hindi (Elective) paper being circulated on the social media was fake, the CBSE said Saturday and urged the people not to spread rumours regarding the paper.
Scuttled holiday plans, clashes with entrance dates, another round of tuitions and the 'phobia' of facing examination day yet againsum up the dilemma being faced by class 10 and 12 students of CBSE.
Parents of almost a dozen students, who were part of the WhatsApp groups where leaked question papers were shared, have told the investigative team that they paid money to get the paper.
CBSE paper leak: Police writes to Google, seeks details of ID used to send email to board's chairperson
The Delhi Police's Crime Branch identified over 10 WhatsApp groups, each having 50-60 members in connection with CBSE paper leak.
Express breaks down the journey of the question papers and the possibility of leakage step-by-step.
Top functionaries of the HRD ministry and the Board yesterday conceded that question papers of Class XII Biology and Accountancy could have been leaked as well.
Reports on two papers being leaked and the CBSE ordering a retest of the Class 10 mathematics and the Class 12 economics paper have led to an unprecedented crisis in the education sector.
The CBSE had announced reconduct of exams following the leak of two papers of Math and Economics for class X and class XII respectively.
Javadekar said that those behind the CBSE paper leak will not be spared and an internal inquiry besides the police investigation is also on to find out the source of the leak.