Autopsies were conducted on the remains of all the victims but the office said it would not release the cause and manner of death until the fire department determines completes its investigation.
Two teenagers remain in critical condition at Stroger Hospital.
Eight people, including six children, were killed when a fire broke out before dawn Sunday at a Chicago apartment in one of the city's deadliest in years, officials say.
A Chicago Fire Department official says some of the children who were among eight people killed in a weekend apartment fire were there for a sleepover.
She called 911 around 4 a.m., then began knocking on doors in the largely Hispanic Little Village neighbourhood on the city's southwest side.
The unidentified woman "started to warn people" to get out of the building, Santiago said.
But the victims who died were already in bad shape by the time firefighters arrived, Vogt said.
Video showed smoke coming from windows on the stone facade of the three-storey building, with flames engulfing the coach house at the back.
A dog was also killed in the fire, while a firefighter was hospitalized in good condition. Police officers helped push a stretcher towards an ambulance while a paramedic performed CPR.
The cause of the fire has not yet been determined. Santiago said no smoke detectors were found at the scene. One woman lay in the street crying. She said she told everyone in her home to get out. "The thing is, you don't realize how we are connected until tragedy strikes", Porod said.
Chicago Fire Department spokesman Larry Merritt said investigators have not found smoke detectors in the building. The fire was put out just after 5 a.m.