[grey_whiskers]

JUST IN - Smoke rising behind the U.S. Capitol building. Emergency announcement playing at Capitol grounds. People who were on the grounds for the inauguration rehearsal have left.pic.twitter.com/JFNAVlIpUq— Disclose.tv 🚨 (@disclosetv) January 18, 2021

[nanetteclaret]

Has the fumigation started?

[bagster]

JUST IN - Smoke rising behind the U.S. Capitol building.

[Ymani Cricket]

There was an alarm that came from an underground tunnel at the capital— marv jelonek (@JelonekMarv) January 18, 2021

[1_Rain_Drop]

"JUST IN - Smoke rising behind the U.S. Capitol building. "

One of the comments:

"Does the colour of smoke signal if they’ve picked a new president?"

[little jeremiah]

UPDATE - Capitol Hill staffers received the following text per @ArdenFarhi:

“All buildings within the Capitol Complex: External security threat, no entry or exit is permitted, stay away from exterior windows, doors. If outside, seem cover. USCP”— Disclose.tv 🚨 (@disclosetv) January 18, 2021

Public safety and law enforcement responded to a small fire in the area of 1st and F streets SE, Washington, D.C. that has been extinguished. Out of an abundance of caution the U.S. Capitol complex was temporarily shutdown. There is no threat to the public. pic.twitter.com/kQfAI4NxNK— U.S. Secret Service (@SecretService) January 18, 2021

[ichabod1]

““All buildings within the Capitol Complex: External security threat, no entry or exit is permitted, stay away from exterior windows, doors. If outside, seem cover. USCP”