The fire broke out this morning in a six-unit apartment and displaced 10 people, according to Battalion Chief Tim Flannigan of the Huntley Fire Protection District.
The man who died in the blaze was identified as Allen R. Jacobs who lived in the Woodcreek apartments, 11702 Woodcreek Drive, according to the McHenry County coroner's office.
Huntley firefighters were called to the two-alarm fire at the apartment building, said Flannigan.
The fire happened at the six unit, wood-frame apartment building, said Flannigan.
He said the fire began in one unit of the apartment where a man was found deceased, he said.
The fire spread to two other units of the building and about 10 people were displaced.
He said the McHenry County coroner was called to the scene, he said. He was found at the scene at 6:25 a.m., according to the coroner's office. An autopsy is pending.
While the cause of the fire is under investigation, the preliminary indication is that the fire did not appear suspicious and may have been accidentally caused, he said.
A Huntley firefighter sustained a minor injury, he said.
It took firefighters about 10 minutes to put out the main fire in the unit and another hour and 20 minutes before officials had the scene under control.
The Huntley Fire Department and the Illinois State Fire Marshall are investigating the cause and origin of the fire.