law: Railways Act, 1989
  119. No inquiry, investigation, etc., to he made if the
  
  Commission of inquiry is appointed. 
  Notwithstanding anything contained in the foregoing provisions
  
  of this Chapter, where a Commission of Inquiry is appointed under, the
  
  Commissions of Inquiry Act, 1952 (3 of 1952), to inquire into an accident any
  
  inquiry, investigation or other proceeding pending in relation toys that
  
  accident shall not be proceeded with, and all records or other documents
  
  relating to such inquiry shall be forwarded to such authority as may be
  
  specified by the Central Government in this behalf.