Breaking news from Fox News’ Rick Leventhal:

BREAKING: law enf source: Hillary Clinton just left 9/11 ceremony w/medical episode, appeared to faint on way into van, helped by security — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

Source tells me Hillary Clinton "clearly having some type of medical episode" & had to be helped into van by her protective detail at WTC — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

MORE ON #HILLARY per witness: "unexpected early departure"; she stumbled off curb, "knees buckled", lost a shoe as she was helped into van — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

According to Leventhal, the episode happened outside of the view of the pool reporters:

@Women4Trump @kevcirilli pool reporters didn't even see it. My law enforcement source watched it happen — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

And the pool doesn’t know where she is:

Pool of reporters who protectively travel w/Hillary Clinton are being penned in at 9/11 memorial, not informed of her current whereabouts. — Steven Portnoy (@stevenportnoy) September 11, 2016

Pooler reports Clinton traveling press is no longer being penned in. Still no update on HRC's whereabouts. — Steven Portnoy (@stevenportnoy) September 11, 2016

Hillary Clinton walked out of the 9/11 memorial about 30 minutes ago but campaign aides won't comment on where she is now. — Monica Alba (@albamonica) September 11, 2016

We’ll update this post as soon as we know more.

Update: Still no word on Hillary Clinton’s location:

@HillaryClinton did leave the 9/11 ceremony viewing area 45+ m ago. Her poolers not taken w her and we cannot verify status or location. — Margaret Talev (@margarettalev) September 11, 2016

Why it's important to have a fully protective pool for a nominee, something her campaign hasn't made possible https://t.co/AzjcxZM8WC — Jennifer Epstein (@jeneps) September 11, 2016

Update: She’s at Chelsea’s apartment?

Clinton per campaign: "During the ceremony, she felt overheated so departed to go to her daughter's apartment, and is feeling much better." — Abby D. Phillip (@abbydphillip) September 11, 2016

Clinton's van and secret service detail is currently outside Chelsea Clinton's Manhattan apartment building. pic.twitter.com/Bx5Lm0VVxr — Dan Merica (@danmericaCNN) September 11, 2016

Update: Here she is leaving Chelsea’s apartment:

MOMENTS AGO: @HillaryClinton leaves daughter's apt; this comes after leaving WTC after reported 'medical episode.' pic.twitter.com/OQBpSNNNz6 — Fox News (@FoxNews) September 11, 2016

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Editor’s note: This post has been updated with additional tweets.