Mayor Bill de Blasio, who rode into office on a wave of populist anger—buoyed in no small part by promises of transparency—has denied an open-records request from local news channel NY1 for emails between his office and a high-powered political operative Jonathan Rosen, whose consulting firm BerlinRosen is deeply entwined with his administration.

Several of Bill de Blasio’s closest aides and political allies have been hit with subpoenas as part of the unfolding investigation by federal and state prosecutors into the mayor’s fundraising activities. De Blasio himself “has not been personally served,” Maya Wiley, counsel to the mayor, told the Wall Street Journal on Wednesday night.