A criminal case has been filed against an unidentified person for stealing a top-secret letter and technical data from the State Intelligence Department. The Cyber Cell of the city crime branch will investigate the alleged information theft.

The intelligence department filed a complaint on Friday following Chief Secretary Sitaram Kunte’s report that, in all probability, the information was procured from the SID commissioner’s office. Former SID chief Rashmi Shukla has been named as a suspect in Kunte’s report. Shukla’s confidential letter was made public by Opposition leader Devendra Fadnavis to substantiate charges of a racket operating for police transfers.