The CBI has arrested a retired Wing Commander of Indian Air Force for his alleged involvement in leaking confidential documents.

Our correspondent reports, the retired official of IAF Koka Rao was taken into custody late last night in connection with leaking the documents related to the force.

The retired officer is being questioned with regards to his association with arms dealer Abhishek Verma and his partners.

The CBI had registered a case against Verma and unknown government officials after a formal complaint was received from the Defence Ministry stating that documents purportedly provided by US-based attorney C Edmond Allen, Verma's business associate, were classified and violated the Official Secrets Act (OSA).