CBI sources said Muhammad Aftaq, hailing from Lucknow, was arrested here in connection with a complaint that results of the 2012 CAT examination were tampered with by increasing the marks of 80 candidates.
The Central Bureau of Investigation took over the probe in April last year in the case registered against the Lucknow-based company which was assigned the job of publishing the result of CAT exams on official website of IIM.
The case was firstly detected in June 2013 after then Minister of State for HRD, Shashi Tharoor, received a complaint in this regard.