Fire Hits Old Chicago Main Post Office Building for 2nd Time in as Many Years

Smoke and falling glass were reported in an extra-alarm fire at the Old Chicago Main Post Office building Tuesday morning that ultimately blocked the Eisenhower Expressway. 

Fire officials reported a blaze at 404 W. Harrison St. in Chicago on multiple floors of the old post office.

"This is NOT a drill," authorities tweeted, later adding that no injuries were immediately reported. 

Glass was seen falling from the building as firefighters battled the blaze with smoke pouring out of several windows. Traffic was blocked on the Eisenhower Expressway -- Interstate 290 -- which cuts through the building as it becomes Congress Parkway. 

The fire was said to be put out just before noon.

This marks the second fire in as many years at the vacant building, which also caught fire in November 2014. That blaze was believed to have been caused by trains running under the structure. 

The United States Postal Service vacated the building in 1997 for a newer facility.

The cause of Tuesday's fire was being investigated.

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