Cause of death of the 17 victims left by the tragic fire in New York revealed | Video | CNN

The New York Medical Examiner's Office confirmed that the cause of death for the 17 people who died in the building fire in Bronx was smoke inhalation.

The firefighters explained that the smoke spread because the door of the apartment where the fire started and the door to the staircase were left open, when they should have closed automatically.