The Law Ministry is reported to have told the Ministry of Home Affairs (MHA) that there was "no legal infirmity" in the agency's request seeking sanction for prosecution against Chidambaram. This view has now been communicated to the CBI as well.
As per a report by the US state department, the CPI(Maoist) is the fourth deadliest terrorist group in the world, with 295 attacks in 2017 alone. It even ranks higher than the Boko Haram.