 The Anti-Terrorism Squad probing into the case has already arrested eight suspects, including two booked in the 11 July Mumbai serial blasts, in connection with four explosions that rocked the town killing 31 people and injuring more than 200.Three accused gave a confession about their involvement in the conspiracy, but soon after, two of them retracted before a magistrate, saying they had not made a voluntary disclosure.This was revealed to a special court by the accused themselves when they were produced before it for remand.