Mumbai's terror track record: nine major attacks in two decades
2006 train bombings blamed on Pakistani intelligence
In July 2006, seven blasts in separate locations on local trains killed 186 people. Indian officials blamed the attacks on Pakistan-based militant group Lashkar-e-Taiba and domestic group Students Islamic Movement of India and said they were acting on behalf of Pakistani intelligence agency Inter-Services Intelligence (a claim that Pakistan denied), according to a BBC report from 2006.
The incident brought Indian-Pakistani relations to a low point, with Pakistan furious with India for placing blame on the Pakistani government.