The bombings show signs of being the work of Kashmir jihadists. "Dozens reported killed in India bombings," from [1] AP:

BOMBAY, India - Seven explosions hit Bombay's commuter rail network Tuesday evening during rush hour, ripping apart train compartments, officials said. Indian television reported dozens may have been killed.

Chaos engulfed the crowded rail network in India's financial capital following the blasts, and authorities struggled to determine the number of casualties.

Indian television reported the death toll could be in the dozens. News channels broadcast video of the wounded sprawled on train tracks and being carried through stations to ambulances, past twisted and torn train compartments....

The blasts appeared to have come in quick succession — a common tactic employed by Kashmiri militants that have repeatedly targeted India's cities.