Gunman held a dozen hostages in a suburban Manhattan bank vault . He said the man was dead of a single gunshot wound to the head . Police : Suspect held knife to man 's throat and demanded his surrender . Suspect was found with a bullet wound to his head , police said .
Gunman held a dozen hostages in a suburban Manhattan bank vault . Police : Suspect held knife to man 's throat and demanded his surrender . Suspect was found with a bullet wound to his head , police said .