It's still unclear what the cause of the fire was, but the apartment reportedly had no smoke detectors.
The fire started on the second floor of the building.
A crowd outside the house gathered in prayer and candlelit vigil is planned.
The firefighter who was transported to the hospital is in good condition, Santiago said, and the fire department is in touch with the mayor's office regarding the blaze.
"Unfortunately. we didn't have time. they succumbed to their injuries before we got there", he said.
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Another senior PLO official, Hanan Ashrawi, accused the U.S. administration of using "cheap blackmail as a political tool". Relief and Works Agency, which provides services to Palestinians in the West Bank, Gaza , Jordan and Lebanon.
A passerby saw smoke at the rear of the building around 4 a.m. local time, Chicago Fire Department spokesman Larry Langford said.
The first call to authorities came when a woman who came home from work smelled the fire, he said.
"(The family) needs to know that the arms of Chicago are enfolding them", said Mary Porod, principal of Queen of the Universe Catholic School who grew up in Little Village.
At least eight people were killed when a fire broke out inside a Chicago apartment building.
"So today, it's even more critical because we lost eight people to a fire and that's unheard of in the city of Chicago". One teen and one adult were taken to Stroger Hospital in critical condition.
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It also emphasised that health loss due to alcohol use was more pronounced for men than it is for women. The research also said that the "myth of the drunk Irish man" is inaccurate.
Video showed smoke coming from windows of a three-storey building's stone facade, with flames engulfing the back. He also it quickly became clear that the lack of any working smoke detectors turned the fire deadly.
Police officers helped push a stretcher toward an ambulance, while a paramedic simultaneously performed CPR.
At least one firefighter was injured. One woman lay on a street crying while someone tried to comfort her.
The victims' names, ages and relationships to each other were not known, Langford said.
"She had just gotten home from work", the fire chief said.
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Michael Cohen turned against Donald Trump after the President backed Vladimir Putin ahead of United States intelligence services. In the end, only a tiny fraction of the seized material was found to be covered by the privilege, according to court filings.