"We are trying to locate files relating to Ishrat Jahan case. We are yet to get all files as some of these are yet to be traced," a senior Home Ministry official said.
The official said re-look of the Ishrat Jahan files was necessitated following the statement of the former Home Secretary.
"We are looking at the files keeping in view that new facts have come to light," he said.
"Only after the affidavit was revised, as directed by the minister, did the file come to me," Pillai is quoted as saying by a media report.
The then UPA government had submitted two affidavits - one that the four, who were killed in an alleged fake encounter, were terrorists and the second saying there was no conclusive evidence - within two months in 2009.