2006 New York Code - Duties Of Police.

 
    §  19-140  Duties  of police. All police officers shall be vigilant in
  the enforcement of the provisions of this subchapter and section  24-521
  of  the  code and report, through proper channels, any violation thereof
  to the commissioner. Police officers, on observing or being informed  of
  the  opening  of  or  excavating in any street, shall require the person
  making such opening or excavation to exhibit a permit therefor, and,  if
  none  has  been  given,  or  if  the  exhibition thereof be refused, the
  officer shall report the same to the commissioner.