<br/>Special Investigation Team- SIT Chief R K Raghavan has said that the questioning of Gujarat Chief Minister Narendra Modi is a big step forward in unraveling the mystery behind the Gulberg Society case. <br/><br/>Talking to a TV Channel, Mr Raghvan expressed confidence that the SIT will submit its report to the Supreme Court by 30th of April in the case. He said the complaint of Zakia Jafri, whose husband and former Congress leader Ehsan Jafri was killed in the post Godhra riots in Gujarat was the basis of the questioning of Mr. Modi. Asked whether the SIT will call Modi again for questioning if needed, Mr. Raghavan said, he has to look at the evidence that has been collected and what Mr. Modi has told while questioned by Mr. A.K. Malhotra of the SIT. Mr. Raghavan said, SIT has the right to recall if there were "gaps" and that applied to any witness. <br/><br/>Meanwhile, Mr Narendra Modi has described his marathon grilling by the SIT as a difficult moment of his life and thanked the people of the state for standing by him. Mr Modi wrote on his blog that he has cooperated with the process of law and accepted its supremacy.<br/>