While conclusive evidence is elusive, blame is being leveled on a Pakistan-based militant group, Lashkar-e-Taiba, further stressing ties between the neighbors.
While no one has claimed responsibility, local authorities are pointing fingers at a separatist group.
The detention of Raj Thackeray, an anti-immigrant activist, threatens to stoke communal tensions against workers from northern states in India's financial hub.
In the Muslim world, breaking the daily fast at sunset was once a family event. Now it's upscale and political.
Nations participating in the Nuclear Suppliers Group summit will debate whether the deal undermines efforts towards nuclear nonproliferation and sets a precedent for other would-be nuclear powers.
Tehrik-e-Taliban carried out Sunday's bombing, the deadliest since the new Pakistani government took power in March. The suicide attack came two days after the militants freed the Pakistani ambassador to Afghanistan, Tariq Azizuddin.
President Mahmoud Ahmadinejad stops in India Tuesday after visiting Pakistan and Sri Lanka on a trip aimed at inking energy deals and curbing the West's influence.