Authorities were withholding the victim's identity pending notification of the next of kin.
The two-alarm fire broke out in the basement and quickly spread to the first floor of the three-story, wood-frame two-family home on 17th Avenue at East 30th Street shortly after 2:30 p.m.
Firefighters had it knocked down within an hour.
Five people were displaced.
The Passaic County Prosecutor’s Office was notified.
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