WTTW studio building evacuated following phone threat

The WTTW studio building was evacuated Wednesday night following a threatening phone call, police say.

About 6:30 p.m., someone made a threatening call to the WTTW offices in the 5400 block of North St. Louis Avenue, according to Chicago police and company officials.

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Police evacuated the building that houses the local PBS TV station, but there was "no incident" company officials said.

No one is in custody, according to police.