law: Companies Act, 2013 
  219.
  
    Power
  
  of inspector to conduct investigation into affairs of related companies, etc.
  If
  
  an inspector appointed under section 210 or section 212 or section 213 to
  
  investigate into the affairs of a company considers it necessary for the
  
  purposes of the investigation, to investigate also the affairs of—
  a.      any other body
  
  corporate which is, or has at any relevant time been the company’s subsidiary
  
  company or holding company, or a subsidiary company of its holding company;
  b.     any other body
  
  corporate which is, or has at any relevant time been managed by any person as
  
  managing director or as manager, who is, or was, at the relevant time, the
  
  managing director or the manager of the company;
  c.      any other body
  
  corporate whose Board of Directors comprises nominees of the company or is
  
  accustomed to act in accordance with the directions or instructions of the
  
  company or any of its directors; or
  d.     any person who is or
  
  has at any relevant time been the company’s managing director or manager or
  
  employee, he shall, subject to the prior approval of the Central Government,
  
  investigate into and report on the affairs of the other body corporate or of
  
  the managing director or manager, in so far as he considers that the results of
  
  his investigation are relevant to the investigation of the affairs of the
  
  company for which he is appointed.