I do see a point in this .. so far the Indian Muslims have been mostly involved in Terrorists plots Inside India .. they never ventured to date outside. It will be interesting to see how this case unfolds.
But if their involvemtn happens to be true then it could as well be the owrk of Pakistan to pull India into these incidents and Pakistan can always find Indian muslims (of course a few Hindus too) who can die for a Paki cause!