Who said what on the role of investigation agency CBI

Who said what on the role of the investigation agency CBI -

"Unfortunately, there are a number of cases where investigating agencies and other authorities like CAG have overstepped their limits..."
P. Chidambaram, Union Finance Minister, referring to the CBI, to wire agencies

"Investigating agencies have been increasingly enquiring into matters related to policy making. Policy-making is a complex process... I don't think it would be appropriate for a police agency to sit in judgement over policy formulation"
Manmohan Singh, Prime Minister, at a CBI conference in New Delhi on November 11 2013

"What if the policy is flawed, is framed with collateral objective to benefit a few people"
Arun Jaitley, Senior BJP leader, discussing the attacks  on the CBI, to wire agencies

"It is not unjustified (TO SAY) that the CBI is an appendage of the government and that it will never act against those in power. This is why the Supreme Court has had to intervene to take over monitoring of investigations"
R.K. Raghavan, former CBI director, in The Hindu

"He (the PM) means that the provision against criminal conduct should not be there. It was introduced because it is very difficult to prove that someone has given a bribe"
Prashant Bhushan, Lawyer and Activist, in The Hindu