The fire is believed to have started in the basement and spread through the three-story building.
Additionally, the marshals determined there was no evidence of sectioning off the rooms in an illegal manner, a practice that has led to residents being trapped in fires in the past.
The four residents were trapped in the attic of the home. Three of them were unconscious when discovered by firefighters.
They were resuscitated at the scene and rushed to Jamaica Hospital and New York Hospital Queens. All four were listed in critical condition.
At least three firefighters were being treated for smoke inhalation and other injuries. The rescues were made by firefighters from Ladder 126 and Ladder 127.
NEW YORK AND TRI-STATE AREA NEWS