And of course, that wouldn't be surprising at all. "India suspects Pak hand in Mumbai blasts," from [1] Zeenews.com, with thanks to DFS:

New Delhi, July 13: India strongly suspects Pakistani hand in Tuesday`s serial blasts in Mumbai suburban trains with all leads pointing to involvement of ISI-backed terrorist outfit Lashkar-e-Toiba, highly placed sources said tonight.

"The involvement of Pakistani hand is obvious...There is no doubt that LeT, which is backed by Pakistan`s ISI, is involved," the sources said.

Various agencies investigating the serial blasts are also probing whether other terror groups were involved along with LeT, they said.

"Other terror groups may have been involved in the blasts along with LeT...This angle is being investigated," the sources said.