Public urged to avoid area amid police investigation in Addison

ADDISON, Ill. (WLS) -- On Sunday, police urged the public to avoid the area of an investigation.

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Addison police said there was "ongoing police activity" in the 300-Block of State Street.

No other information was available.

ABC7 obtained video showing tactical officers outside a residential building.

This is a developing story; check back with ABC7 for updates.