Police have released this photo of a man who stormed the US Capitol in the hope the public can help identify him.
The Metropolitan Police Department (MPD) in Washington, DC, is calling on help from public after releasing a number of images taken during yesterday's riots.
The images show "persons of interest" connected to the riots, where hundreds of pro-Trump protesters stormed the Capitol building.
It includes photos of a shirtless tattooed man wearing a horned furry hat, face paint and carrying a megaphone.
"The same rules apply for all demonstrations in DC and we welcome anyone to our city who wants to come to exercise their First Amendment rights peacefully. The Metropolitan Police Department will work with organisers to facilitate.
"If there are persons that destroy property or hurt someone at any time, police will take action. MPD rarely has to make an arrest at a demonstration but in the event that we do, know that it will be done safely and respectfully."
NEW: A Maryland company has terminated one of its employees after he was apparently captured in a picture during the mob riot in the Capitol yesterday. @wbaltv11pic.twitter.com/flxRhdmP3P
Most of the individuals in the images are facing unlawful entry charges, others may also be charged over stolen property, as some took items from the building.
Small crowd gathered right outside Capitol doors calling for Gov. Ducey to come out calling him shameful and a traitor. A few began to bang on the windows but another protester with a megaphone told them to stop. pic.twitter.com/VgX1NeSzQI
"Please use this form to submit any images, videos, or other multimedia files you have related to possible violations of federal law committed," wrote the FBI.
"Our goal is to preserve the public's constitutional right to protest by protecting everyone from violence and other criminal activity."