First responders were called to the 2800 block of Lehigh Avenue just after 3 a.m., a PFD spokesperson told Daily Voice.
Five people were treated at the scene by EMS and then taken to area hospitals, the department said.
Firefighters were on the scene for over an hour, they added.
PFD is reminding residents that free smoke alarms are available by calling 311 or 215-686-8686.
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