The court said allowing CBI's plea would not cause "prejudice" to the accused as the progress of the case before it was at an initial stage.
"In view of the law and facts, it is clear that the prosecution may file additional documents and list of witnesses, subsequent to the filing of the charge sheets, if they are considered relevant by it, more so when the case is still at an initial stage and no prejudice is being caused to the accused.
"The applications filed by CBI are squarely covered by the law and, as such, deserve to be allowed and the same are accordingly allowed. The documents are ordered to be taken on record," special CBI judge OP Saini said.
CBI had filed four applications in April and July for filing some additional documents and statements of witnesses. The agency had also sought ther court's permission to take these documents on record.
CBI's move to file the additional documents was opposed by most of the accused in the case who had argued tha these documents were collected during investigation itself and they could have been filed with the charge sheets.
CBI prosecutor AK Singh had countered the submissions of the accused saying when the prosecution could conduct further probe, it could also file additional list of witnesses and documents, if it deemed it necessary.