Section 8(5)(b) in The M.P. Civil Services (Pension) Rules, 1976
(b)the expression "grave misconduct" includes the communication or disclosure of any secret official code or pass word or any sketch, plan, model, article, note, document or information such as is mentioned in Section 5 of the Official Secrets Act, while holding office under the government so as to prejudicially affect the interests of the general public, or the security of the country.