Who's blowing up India?

At least 15 people have been killed and dozens more wounded after a series of explosions struck the western Indian city of Ahmedabad, officials have said. 

More than a dozen blasts are reported to have hit residential areas, crowded markets, a train station and a bus in Gujarat state's commercial capital. 

It is thought the explosions were caused by crudely-made devices hidden in boxes and on bicycles. 

On Friday a series of similar blasts hit the southern city of Bangalore. More...

See also: India:80 killed, 150 wounded in Jaipur blasts

And this: Jaipur's "bicycle terrorists" send an e-mail...