In a fresh communication, the Home Ministry reminded its earlier letter where it had sought the state government's opinion on handing over the probe into the July 27 incident to the National Investigation Agency.
Sources said the Home Ministry is pitching for handing over the investigation to the specialised anti-terror probe agency.
"There are provisions in law for NIA to take over the case suo motto. But we are looking for a consent of the state government and would like to wait for it," a source said.
Seven persons--three civilians, SP (Detective) Baljit Singh and three home guards-- were killed by the terrorists.
A Punjab police SWAT commando team later eliminated the three terrorists after a long-drawn operation.
