SOUTH LOOP — The Chicago Fire Department closed off nearly two blocks of Wabash Avenue at 8th Street Monday afternoon while a hazmat team investigated an "unknown fluid" there, fire officials said.
Responding to a call of a "suspicious package," the hazardous materials team arrived at the site at about 4:10 p.m. and closed off the area.
They found no dangerous substance and the block was reopened within less than a half hour, a Chicago Fire spokesman said.
A tweet from CFD's media account said the "discarded nitrous oxide tanks" were secure, and no injuries were reported.
Wabash blocked Balbo to 9th. Bomb and arson team on scene after reports of "unknown material" in tanks pic.twitter.com/h9i50Yljty
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