The boy “had a history†of playing with burners on the stove, New York Fire Commissioner Daniel Nigro added. When the child’s mother discovered the fire, she took the boy and a 2-year-old out of the building, but left the door open, helping the fire spread. The building’s open stairway “acted like a chimney,†Nigro said.
Article source: https://www.huffingtonpost.com/entry/bronx-apartment-fire-dead_us_5a45a1d5e4b06d1621b7f1d7?utm_hp_ref=new-york-city