ordered to head a special team and they started investigation on 22.10.2006. Between 22.10.2006 and 3.11.2006, 105 witnesses came to be questioned. He found that both the BJP and CPM sympathizers could be suspected. It is pointed out that no conclusion was reached in this investigation. By order dated 3.11.2006, investigation was transferred to the CB CID, Kannur. A special team led by Shri D. Sali was entrusted with the investigation of the case. The investigation which he took up on 8.11.2006 continued till 25.1.2007. He questioned 149 witnesses. Since the investigation did not bear fruit, the Additional Director General of Police (Crimes) entrusted the investigation to a team headed by Shri T.P. Mohan Das, Superintendent of Police, CB CID, SIG III, Kozhikode. The investigation under him was spread over a period which commenced from 1.2.2007 and terminated on 3.4.2007. Though he questioned 33 witnesses, there was no clue during his investigation also. Shri T.P. Mohan Das came to be entrusted with the Calicut SM Street explosion case and, therefore, he was relieved from the investigation by order dated 10.4.2007. The investigation was entrusted with Shri T.K. Rajmohan, who was the Superintendent of Police, CB CID, Kannur and he commenced investigation on 12.4.2007 and continued till 24.5.2007. It is thereafter that Shri V. Venugopalan who took charge as Superintendent of CB CID, Kannur, took over the investigation. Thereafter, by order dated 12.6.2007, stating that Shri T.K.Rajmohan who was transferred and posted as Superintendent of police, CB CID, Kozhikode was well-versed with the facts and circumstances of the case and the change of the Investigating Officer will adversely affect the progress of the investigation, shri Rajmohan was ordered to continue as the Investigating Officer in this case.