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BREAKING: U.S. Capitol Building and Visitor Center on Lockdown (UPDATED)

News is breaking from Washington, D.C.-based reporters on Twitter that there is a lockdown happening in the nation’s capital city that was announced over loudspeakers at 9:22 a.m. ET.

This is an ongoing story and this post will be updated with more information as it becomes available.

UPDATE — 9:31 p.m. EST:

Chad Pergram, who covers Congress for Fox News, is tweeting details he claims come from sources.

UPDATE — 9:39 p.m. EST:

It appears the lockdown is over.

Now we wait to learn the details.

[image via screengrab]

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