Heavy police presence seen in NYC Sunday amid IED probe near Gracie Mansion NYPD is asking residents to avoid East End Avenue amid ongoing IED investigation near Gracie Mansion. (Credit: Peter Gerber) NEW You can now listen to Fox News articles! The NYPD announced Sunday that a third suspicious device has been recovered as part of an ongoing investigation into an improvised explosive device (IED) thrown during dueling protests outside Gracie Mansion a day earlier. Police said officers