The series of blasts on October 30 at four places in Assam, including Guwahati will now be investigated by the CBI The state government had set up a Special Investigation Team (SIT), led by an inspector general of police (IGP), to investigate the serial explosions, but despite 11 arrests, the SIT was unable to make any headway in the case. The decision to handover the investigation into the serial blasts and the ethnic violence, to the CBI was taken after an all-party meeting convened by the state Chief Minister Tarun Gogoi.