Two of the victims, including a 3-year-old child, were hospitalized in critical condition. Two others were also taken to a hospital with less serious injuries.
At least two victims were found on the second floor of the residence.
The fire was knocked down in about 30 minutes. Details about a cause were not immediately available.
At approximately 8:30 AM, #YourLBFD responded to the 2300 block of Atlantic Ave. Upon arrival, firefighters encountered heavy smoke and fire conditions coming from the second floor of a two-story single-family dwelling. pic.twitter.com/uwDkFKeRtf