The Fire Department of NY says 16 people are hurt, four of them seriously, in a fire raging through a Bronx building.
The flames broke out after 5am (9pm AEDT) in the Van Nest area of the Bronx in a building that houses a furniture store on the first floor and apartments on the upper floors.
It was the deadliest fire in New York City in more than 25 years, officials said, and left at least 14 families homeless. The store is on the ground floor with apartments above.
"Children starting fires is not rare", FDNY Commissioner Daniel Nigro said on Friday, adding that the stairway "acted like a chimney".
Officials say firefighters cleared the building, and no people have been reported missing.
The cause of the fire is not immediately known. More than 250 firefighters were at the scene.
The Red Cross was helping about 22 people who have been displaced. "By the time we opened the door in the hallway, there was black smoke".
"I woke up my husband, my kids and said listen there's a fire in the building", she told WABC.
Crews were still working to get the fire under control Tuesday morning.
Resident Erica Ortiz said a window guard prevented her from fleeing down the fire escape.