Aurora fire officials said a home was fully engulfed in flames when crews arrived at the scene of a fire late Thursday night.
Two teen siblings who were sleeping in the home were able to escape, but their mother was apparently trapped in a back bedroom. She did not survive.
A spokesman for the fire department said that his crews arrived at the home between 11:30 and 11:45 p.m. and found the woman about three minutes later.
The woman, in her 50s, was rushed to Rush-Copley Medical Center in Aurora, where she died of her injuries Friday morning, according to Aurora Fire Department Assistant Chief John Lehman.
The Chicago Tribune reported that the fire occurred in the 3000 block of Long Grove Lane on the city's far East Side in a single-family home.
The victim's husband was at work at the time and their teenage children ran to a neighbor's house for help.
According to the published report, the house sustained damage estimated at about $200,000. The chief said it was uninhabitable.
The family dog also died in the fire and a firefighter suffered a minor injury.
Lehman told the Tribune that the home had working smoke detectors, likely the reason the other family members were able to escape.
The chief said that the fire is under investigation by his department, the Aurora Police Department, the DuPage County Fire Investigation Task Force and the Illinois State Fire Marshal's Office.
The Chicago Tribune contributed to this story.
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