Refusing to transfer the Dinanagar terror attack investigation to National Investigation Agency (NIA), the Punjab government on Friday told the Union ministry of home affairs (MHA) that Punjab Police had “enough professional and technical efficiency”.The state government, however, informed the MHA — which wants the July 27 terrorist strike to be investigated by the NIA alone — that the “state police will appreciate the gesture of any investigating agency” to associate itself with the investigation of Punjab Police and exchange any information that will enhance the safety and security of the state.The Parkash Singh Badal government has told the MHA that the state police was of the view that transferring the case from the state police to some other agency, including the NIA, will not only disturb the continuity of the ongoing probe but also “jeopardise the sustained and long-term efforts” required to be done by the state police to ensure the safety and security of the state.