The alleged snooping took place between 2009 to 2017, coincidentally, the period when the co-location scam took place. The snooping machine was later disposed of as e-waste of NSE.
The agency has booked Pandey, his Delhi-based company, NSE officials former MD and CEOs Narain and Ramkrishna, executive vice president Ravi Varanasi and head (premises) Mahesh Haldipur among others in the FIR, officials said.