TRENTON, N.J. (WPVI) -- The Mercer County prosecutor's office is investigating a fire that injured a woman in Trenton, New Jersey.
The flames broke out in a rowhome on the unit block of Oak Street just after 5 a.m. Saturday.
The fire then spread to the homes next door.
The Red Cross is helping a total of seven people who are displaced.
The injured woman is being treated for smoke inhalation.
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