From Inside Edition.

Five people are dead after a gunman entered a New York City office building, shooting and killing four people, including a police officer, before turning the gun on himself. Several more were injured in the mass shooting, which began after 6 p.m. Monday evening. The office building, 345 Park Avenue, is home to the offices of the NFL, among other businesses. The NYPD said the officer who died in the shooting was 36-year-old Didarul Islam.