NEW DELHI, Jan 6 (Reuters) - Indian Prime Minister Manmohan Singh said on Tuesday that Pakistan was whipping up war hysteria, and that the Mumbai attacks must have had support from some official agencies from within its nuclear-armed neighbour.

"Today even as Pakistan engages in whipping up war hysteria, our nation remains steadfastly united and if anything the process of national consolidation is becoming stronger," Singh told a security conference in New Delhi. (Reporting by Simon Denyer; Editing by Alistair Scrutton) (alistair.scrutton@thomsonreuters.com; +91 11 4178 1000; Reuters Messaging: alistair.scrutton.reuters.com@reuters.net))

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