India, July 22 -- The Dirksen Federal Building in Chicago was placed on lockdown on Tuesday afternoon. The building on 219 South Dearborn Street, which serves as a federal courthouse, was placed on lockdown, and the FBI was investigating the incident. It was not immediately clear what sparked the lockdown. But ABC7 reported that there was a person with a knife inside the building.

Locals have been asked to avoid the area as the FBI probe continues.

This story is being updated.

Published by HT Digital Content Services with permission from Hindustan Times....