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.

Capitol just placed on lockdown, a booming voice tells us over the intercom — Julian Hattem (@jmhattem) July 8, 2016

Lockdown is being announced in the US Capitol — Michael McAuliff (@mmcauliff) July 8, 2016

We’re currently locked in the House chamber. Overheard a Capitol police officer say a woman entered Rayburn with a gun @CQnow — Katherine Scott (@KatherineBScott) July 8, 2016

Email just sent to all House staff: Capitol Building and Capitol Visitor Center on LOCKDOWN. pic.twitter.com/DPdJlZxY4R — Steven Smith (@StevenDCSmith) July 8, 2016

@MEPFuller it’s the Capitol and CVC, lockdown is not for the office buildings — Liz H. (@Gothama1) July 8, 2016

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.

From sources: Woman in print dress was in Rayburn. Had backpack. Was going to Capitol thru underground subway when cops believes she had gun — Chad Pergram (@ChadPergram) July 8, 2016

USCP now searching Capitol for suspect woman with gun in Capitol. One source said it may have been a false hit on if she had a gun — Chad Pergram (@ChadPergram) July 8, 2016

Search teams now going thru the Capitol looking for female suspect who may have had a gun — Chad Pergram (@ChadPergram) July 8, 2016

"No one knows where she is. She could be anywhere," – Capitol police officer, word for word re: woman with gun — Katherine Scott (@KatherineBScott) July 8, 2016

UPDATE — 9:39 p.m. EST:

It appears the lockdown is over.

lockdown is over — Julian Hattem (@jmhattem) July 8, 2016

Lockdown has lifted. We're allowed to leave the House chamber and re-enter the press gallery @CQnow — Katherine Scott (@KatherineBScott) July 8, 2016

Now we wait to learn the details.

[image via screengrab]

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