A fire broke out at the two-story, duplex, wood-frame at 81 Wolcott Terr. around 2:25 p.m.
A second alarm was called immediately with some 70 firefighters at the scene.
Firefighters reported a roof collapse with one firefighter suffering a minor injury -- but remaining on duty.
The fire was considered under control at 3:03 p.m.
Six families, comprising 17 adults and nine children, were relocated.
The cause and origin of this fire are under investigation by the Newark Fire Division’s Arson Unit.
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