Excerpts from wgntv.com:

More than 100 Chicago firefighters battled a 2-alarm fire in the city’s Ravenswood neighborhood.

The fire started in a 3-story apartment building in the 5100 block of north Paulina just after 1 a.m. Saturday, then spread to another 2-story home next door. Crews had to return two additional times to douse hotspots.  No one was hurt.

It’s not clear yet how many people were displaced by the flames. Sources on the scene said there are at least six units in the building, in addition to the house that had to be vacated because of the fire.

The cause of this fire is still under investigation, but firefighters believe it started on the back porch of the apartment building.