India probes Mumbai 'terror' blasts

India's Home Minister P. Chidambaram said Thursday that crude bombs hidden to cause maximum injuries were used in the triple Mumbai blasts that killed 17, as investigators began their hunt for the perpetrators.

Home Minister P. Chidambaram refused to speculate about the group behind the coordinated attacks at rush-hour on Wednesday in India's commercial hub, saying authorities had received no prior warning or claim of responsibility. "All groups hostile to India are on the radar. We are not ruling out anything, we are not ruling in anything. We are looking at everyone," he told reporters after visiting the scene of the blasts.