A video released by Wilayat Kirkuk, an ISIS sub-group based in Salahuddin province, north of Baghdad, appears to show militants in Iraq praising the Paris attacks and warning that a similar attack could take place in Washington, says Sydney Morning Herald.

While the authenticity of the video could not be confirmed, it closely resembled the other videos released by the Islamic State. However, it was low on the theatrics and high-end editing.

The 11-minute video begins with a selection of news clips showing the after-effects of the attacks, with President Hollande condemning them.

Later in the video, a man identified as “Al Karar the Iraqi” speaks to the camera, threatening the “crusader” nations in the coalition against the Islamic State. The U.S. capital is specifically singled out.

“We say to the states that take part in the crusader campaign that, by God, you will have a day, God willing, like France’s and by God, as we struck France in the center of its abode in Paris, then we swear that we will strike America at its center in Washington,” the man says, according to Reuters.

Another man, identified as “Al Ghareeb the Algerian,” also said that European nations should expect similar attacks.

“I say to the European countries that we are coming — coming with booby traps and explosives, coming with explosive belts and [gun] silencers and you will be unable to stop us because today we are much stronger than before,” he said.

Al Karar the Iraqi also tells French President the terrorists will “negotiate with you in the trenches and not in the hotels.”

Capitol Police stepped up security on Capitol Hill. An email warned lawmakers and their aides to use tunnels connecting the Capitol to the House and Senate office buildings “out of an abundance of caution,” but said there is no particular danger.

“While there currently is no specific threat to the Capitol Complex it will always be an appealing target,” the message says.

D.C. police are monitoring the message, as well.

“The Metropolitan Police Department is working collaboratively with local and federal law enforcement and homeland security agencies to ensure the security of Washington, DC,” the department said in a statement. “We will continue to monitor intelligence reports and work with our federal partners to authenticate and determine the credibility of this new threat. MPD will maintain a proactive posture in response to the tragic events in Paris and the recent threats against our city. Additionally, our resource deployment and staffing have been enhanced.”