The private tutor of the coaching centre, located in Rajinder Nagar is being interrogated, said RP Upadhyay, special Commissioner of Police, Delhi.
The CBSE, in its complaint, has named the teacher as one of the accused in the alleged leak of Class 12 economics and Class 10 mathematics papers.
Upadhyay further informed that two cases have been registered and special investigation team (SIT) has been formed for the investigation.
"Two cases registered and special investigation team (SIT) has been formed for investigation. Total 25 people have been questioned so far. Both the papers were leaked on WhatsApp a day before the exam. No person has been arrested so far," RP Upadhyaya added.
Soon after this, CBSE announced re-examination and a police investigation into the matter. (ANI)