The Islamic extremist militant group known as the Islamic State and ISIS released a video Monday threatening Washington, D.C., with terror attacks, following Friday's attacks in Paris, France, that killed 129 people and wounded several hundred more.

Militants wearing scarves spoke to the camera in the video, threatening that the U.S. would “suffer the same fate” as France. "We say to the states that 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," one militant said in the video, as reported by the Independent.

News of the video came as leaders around the U.S. stepped up their response to the Paris attacks, saying the nation needed to heighten security before another attack like Sept. 11, 2001 occurred, when a series of coordinated assaults on U.S. landmarks by al-Qaeda terrorists killed 3,000 people.

"I'm trying to protect America from another 9/11, and without American boots on the ground in Syria and Iraq, we're gonna get hit here at home," Sen. Lindsey Graham, a Republican presidential candidate from South Carolina, told CNN’s New Day Monday morning. "And if you don't understand that, you're not ready to be commander-in-chief in my view,” he said.

The U.S. has been conducting airstrikes in Syria targeting ISIS since 2014, attacking 2,600 targets according to the New York Times. Graham advocated for more military intervention in Syria, calling for 10,000 U.S. boots on the ground. President Barack Obama said in October he would send a few dozen special forces to the region.

"There is a 9/11 coming, and it is coming from Syria if we don't disrupt their operation inside of Syria," said Graham.

Social media users said they were taking the threat seriously.