The CBI will ask for the Supreme Court's permission to probe the alleged fake encounter of Tulsi Prajapati, who was accompanying Sohrabuddin Sheikh and his wife Kausar Bi when Gujarat Police had picked them up in Andhra Pradesh.
While Sohrabuddin was killed in a fake encounter on November 26, 2005 and Kausar Bi was eliminated a few days later, Prajapati was killed in December 2006 in Banaskantha district, north Gujarat.
A CBI official said on condition of anonymity that Prajapati was eliminated "because he was a key eyewitness in the Sohrabuddin fake encounter."
He said, "To establish a larger conspiracy behind the Sohrabuddin fake encounter case, the probe into Tulsi's killing must be given to the CBI."
The agency, which began investigating the killings of Sohrabuddin and Kausar, following a Supreme Court order on January 12 this year, is now set to submit its progress report to the apex court on July 30.
The agency charge-sheeted 15 people, including the former state junior home minister and a close aide of Chief Minister Narendra Modi, Amit Shah, four IPS officials and others and concluded that extortion was the prime motive behind the killing of Sohrabuddin.
The CBI wants that the trial be shifted from Gujarat to some other state on the ground that the accused are influential and can try to influence the course of the trial.
The agency will also seek the court's sanction for a further probe into the extortion complaints, following the arrest of IPS officer Abhay Chudasama. The CBI has recorded statements, disclosing how the police officials extorted just after the encounter of Sohrabuddin.
The CBI will seek the transfer of former DSP N K Amin, who has appealed to turn approver, from the Sabarmati jail to a jail outside the state because he faces threat to his life. On Tuesday, the special CBI court rejected Amin's transfer plea.
The CBI officer said the agency also wanted to carry out a detailed probe into the role of some Rajasthan-based marble traders in the fake encounter case "because Sohrabuddin was extorting from them in Rajasthan".