The death toll from a series of bomb blasts in the western Indian city of Ahmedabad climbed to 45 as the provincial government ordered a probe along with federal agencies to search for suspects.

A group called the "Indian Mujahideen" said it carried out the Ahmedabad attack, writing in an e-mail sent five minutes before the first blast that it was in revenge for a 2002 massacre in Gujarat of around 2,500 people, mainly Muslims, by Hindu mobs.