A vigil for NYPD Det. Didarul Islam, one of the four victims killed in Monday's Midtown Manhattan office building shooting, ...

The video above aired in a previous newscast. NEW YORK (PIX11) — A gunman who killed four people in a Park Avenue building ...

It was just after 1:30 a.m., and Jessica Tisch was walking the eerie quiet of 345 Park Avenue, surveying the detritus of a deadly attack.