Railways today decided to postpone the forthcoming Railway Recruitment Board examination scheduled for July 25 . The examination was to be conducted for 1197 vacancies in paramedical category and 162 vacancies in technical research supervisor category across 19 RRB centres. <br/><br/>Official sources said, the examination was cancelled as a new full-proof system for conduct of the examination is yet to be put in place. <br/><br/>Earlier, CBI had unearthed the recruitment scam and arrested eight persons, including son of Chairman of Railway Recruitment Board, Mumbai, for allegedly leaking exam paper for money following which examinations scheduled for June 27 was postponed.