'Unknown Substance' Under Investigation In Naperville

NAPERVILLE, IL -- Police and fire crews have closed roads in Naperville as they work to investigate what has been described as an "unknown substance." Officials say the substance, which was reported in the 1000 block of Huntleigh Dr., is currently contained and there is no threat to the public.

According to city officials, Huntleigh will remained closed between Naper Boulevard and Culpepper, and Culpepper Dive will be closed at Huntleigh as crews continue to investigate the incident.

This is a developing story; check back for updates

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