The blaze broke out on the 2300 block of Hartville Street around 2:00 a.m. Sunday, April 24.
A 38-year-old woman was reportedly able to escape by jumping out of a window, but was hospitalized with burns, 6abc reports.
The Philly Fire Department called it a "devastating morning in Kensington."
Fire official were expected to hold a press conference at 12:30 p.m.
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