It is already well known that most of killingsin india are extra judicial with security forces even indulging in rape, besides the case which u have cited itself was proved false with camera evidence.
Dont forget the ansal plaza, even the doc who was eyewitness to the entire planned murder was pushed off.
And u say policehas no authority here, infact its beause of the junfgle raj by police that India has so many problems including usage of explosives by RSS etc