Section 451. Powers and duties of the board

a. The board shall have the
  power to:
    1. perform assessments and audits of the police department's  internal
  systems  for  detecting,  investigating  and preventing corruption among
  uniformed and civilian  members  of  the  police  department,  and  make
  recommendations for the improvement of those systems;
    2.  make  recommendations  to the police department in relation to the
  formulation and implementation of policies and programs  to  detect  and
  eliminate corruption;
    3.  undertake independent investigations of possible corruption within
  the police department; and
    4. undertake investigations of possible corruption within  the  police
  department at the request of the mayor or the police commissioner.
    b.  If  during  the  course  of any assessment, audit or investigation
  undertaken pursuant to subdivision a of this section, the board forms  a
  reasonable  belief  that  criminal  activity  or  other  wrongdoing  has
  occurred or is occurring, the  board  shall,  as  soon  as  practicable,
  report the facts that support such belief to the police commissioner and
  the appropriate prosecuting attorney.