RB Sreekumar, a 1971 batch Gujarat cadre IPS officer, has alleged that Murmu was deputed to "tutor" the witnesses who deposed before Nanavati Commission in 2004, saying it was done in order to give a clean chit to Narendra Modi, whose name came up during investigations into the 2002 riots, these allegations found to be false and "motivated" as recoded by SIT and Ishrat Jahan encounter case. During 2013 CBI investigations, Murmu was alleged to have influenced police officials investigating Ishrat Jahan's encounter and trying to derail the investigation.