From Yahoo News/AP:
NEW DELHI – A Pakistani militant group apparently used an Indian operative as far back as 2007 to scout targets for the elaborate plot against India's financial capital, authorities said Thursday, a blow to Indian officials who have blamed the deadly attacks entirely on Pakistani extremists.
As investigators sought to unravel the attack on Mumbai, stepping up questioning of the lone captured gunman, airports across India were put on high alert amid fresh warnings that terrorists planned to hijack an aircraft.
Read more .....
My Comment: I am sure that when the final story is told, this terror operation involved dozens (if not more) individuals, months of planning, training, coordination, and a lot of money.