Firefighters responded to reports of heavy smoke in a Center City apartment building early Friday morning.
The fire broke out in a 4-story residential property on the 300 block of South 17th Street, near Spruce Street, shortly before 1 a.m., officials said.
One victim was treated at the scene, but they should be okay.
No other injuries were reported.
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Investigators are working to determine the cause of the fire.