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Michigan Avenue Briefly Closed After Someone Hears Explosion

Michigan Avenue Closed

Police closed Michigan Avenue between Lake and Madison streets Friday morning after reports of an exploding noise. (Credit: Ron Gleason/WBBM Newsradio/CBS)

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UPDATED 05/18/12 10:34 a.m.

CHICAGO (CBS) — Michigan Avenue was briefly shut down between Lake and Madison streets due to police activity.

The road had reopened as of 10:25 a.m., and crime scene tape had been removed.

Police had shut down both sides of the long stretch of Michigan Avenue – much of which is alongside Millennium Park – as of 10:20 a.m.

CBS 2′s Kris Habermehl reports someone apparently heard a detonation or explosion reminiscent of fireworks at the scene, but there were no reports of any explosives being found.