An early morning blaze in Boerum Hill, Brooklyn injured four children and one adult in the Wyckoff Gardens public housing development.
Firefighters rescued two infants — one of which was said to have been in critical condition — and an older child, all of whom were taken to Methodist Hospital.
Authorities said a fourth child, also older, was taken to Cornell Hospital in critical condition. FDNY also rescued an adult, who the Daily News reported as the 63-year-old grandmother to the children, from the fire.
Officials said that the blaze broke out around 2:15 a.m. on the fifth floor of the three-building complex home to around 1,220 people.
Investigators had not yet determined what caused the fire by Sunday afternoon.
Follow Chester Jesus Soria on Twitter @chestersoria