Multiple law enforcement agencies have responded to reports of an active shooter at an office building near Madison, Wisconsin, according to local media reports.
LIVE UPDATES: Police respond to shots fired report at Wisconsin office building
Officers were dispatched around 11:30 a.m. Eastern time to the building on Deming Way in Middleton, located just west of Madison.
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It is not known how many people have been injured or if police have taken anyone into custody.
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Multiple schools are on lockdown because of the incident, according to CBS affiliate WISC-TV in Madison.
We’ll continue to update this page as new details become available.