According to preliminary findings, the accused had trained around 1,000 students over the years under an arrangement where candidates paid charges after passing.
Police added that the investigation is now focused on unearthing the entire paper leak network and identifying the roles of other individuals involved in the racket.
The TET paper leak came close on the heels of the national controversy triggered by the NEET-UG paper leak, raising fresh concerns over the integrity of competitive examinations.
The investigators claim that the question papers were sourced directly from from Mahim Patran Pvt. Ltd, a private printing press located in Agra, Uttar Pradesh.
Maharashtra Police have so far arrested three people in connection with the leak and recovered four sets of question papers during a trap operation in the Kongaon area of Thane district.
