Didarul Islam, NYPD officer, killed after gunman shot people at building housing NFL headquarters and financial firms before shooting himself
05.29 EDT Gunman kills four people in shooting at Manhattan skyscraper
Hello and welcome to the US politics live blog. My name is Tom Ambrose and I will be bringing you all the latest news over the next few hours.
We start with the news that a gunman... [2633 chars]