UPDATE: A fire warehouse on the South Side has broken out again, two days after the blaze sent about a third of the city's fire department to battle the blaze.
The initial fire on Tuesday night was the biggest in Chicago in seven years.
It began burning again on Thursday morning and had once again fully engulfed the building. The warehouse is filled with old timber and hotspots from the initial blaze rekindled once again.
Firefighters raised a 5-11 alarm, and two special alarms, for the blaze on Tuesday. That brought approximately 200 firefighters and more than 50 fire companies about a third of the city's fire vehicles ? to the scene at 3757 S. Ashland Av., on the border between Bridgeport and McKinley Park.
The fire burned out of control on Tuesday night into Wednesday morning. Even when the worst of the flames were out, crews stayed on the scene for hours to douse hotspots, and prevent the fire from flaring up again.
That effort apparently wasn't enough as the fire began burning again on Thursday morning.
Not only were crews battling a huge amount of flames, but the coldest weather in about two years also played a factor.
It's the biggest fire in Chicago in the past seven years.
First Deputy Fire Commissioner Charles Stewart III says frigid temperatures made the fire more difficult to handle. Stewart says the Chicago Transit Authority brought in warming buses so that firefighters could seek relief from the cold. City crews also are working to salt the roads around the building to help deal with a build-up of ice.
More than 170 firefighters responded to the five-alarm blaze at about 9 p.m. Tuesday, and firefighters were still working to extinguish the fire Wednesday morning.
Stewart says one firefighter suffered a minor injury. There's no word yet on what caused the fire.