Portage Park fire: Massive blaze causes partial roof collapse to business building, CFD says

CHICAGO (WLS) -- Firefighters have put out a massive business fire on Chicago's Northwest Side Sunday.

The fire broke out in the 4100-block of North Nashville Avenue near Irving Park Road.

Heat posed as one of the challenges Chicago firefighters faced while battling the large flames.

CFD posted on social media, calling this a "Level 1 HazMat" fire, which, at one point, caused a partial roof collapse.

It is unclear if there was or how many people were inside at the time.

However, the last update from authorities is that there were no injuries.