Incidentally, on July 5, a single-judge bench of Justice Rajasekhar Mantha of the Calcutta High Court had directed the CBI to seek the help of a specialized agency to recover data related to the OMR sheets.

Sources said the two cyber and software experts who accompanied the officers who conducted the raid are independent experts and are not directly associated with the investigating agency.

Sources further said that the cyber experts accompanying the CBI officials will retrieve the data related to OMR used in the written examination for recruitment of primary teachers in 2014 from the servers or computers of the office of the outsourced agency.

As per Justice Mantha's direction, the entire cost of the assistance of the expert agencies is to be borne by the West Bengal Board of Primary Education (WBBPE).

On July 2, Justice Mantha directed the CBI to deposit the original hard disks where digital copies of Optical Mark Recognition (OMR) sheets used in written examinations for recruitment of primary teachers were stored.

However, on July 5, the CBI counsel informed the court that officials of their central agency were not in a position to submit it in the court. Subsequently, Justice Mantha directed the central agency to seek the help of expert agencies from anywhere in the world to recover that data.