How's this for a hump-day morning?

The Republican National Committee headquarters is on lockdown and HAZMAT is on the scene.

What the heck is going on?

Fire and medic are also on the way to the scene, according to Fox News.

According to the latest from the New York Post, "vials of blood" were found this morning at the Republican offices.

It was unclear exactly what caused the security alert, but one source told The Post: 'It sounds like vials of blood were sent in a package and something broke open.'

More from NBC:

The suspicious package was cleared, U.S. Capitol Police told NBC News. But one of the sources familiar with the situation said the building was still on lockdown and the blood was being tested.

We'll keep you updated when we find out more.

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