WATCH: Parliament Suspended During London Terror Attack

Video captured the moment UK Parliament was suspended after sounds of gunfire were heard outside during what police are considering a terrorist attack on the British seat of government.

You can watch the video above.

There were also reports that British Prime Minister Theresa May was “ushered into a car” and evacuated during the attack. “It’s believed she initially headed to Black Rod’s entrance but then turning towards Carriage Gates, near to where the incident took place,” according to Metro.

The Guardian reported that May “was rushed into a car 40 yards from the gates outside parliament where shots were fired minutes after the incident occurred, according to footage filmed by a member of staff.”

The Guardian reported: “She was ushered by at least eight armed undercover police, some with their firearms drawn, into a waiting black vehicle in Speaker’s Court, the footage seen by the Guardian shows. Loud bangs can be heard in the background as she is ushered into the car, but it is unclear whether the bangs were gunshots.”

The terrorist attack, which unfolded the morning of March 22, shut down Parliament. According to ABC News, there were reports that the assailant, wielding a knife, was shot to death by a police officer. As many as 12 people may have been injured, including some from being mowed down by a car in the unfolding incident. The Metropolitan police said on Twitter that they were treating it as a terrorist attack, and graphic video captured the scene of people lying in the roadway.

“Unmarked police vehicles have blocked off the road to parliament at Horse Guards Parade. A helicopter is flying low above the Foreign Office and the PM’s residence,” reported the Guardian.

BBC reported, “Prime Minister Theresa May is safe after an assailant was shot outside Parliament by armed police, a spokesman for her office said.”

However, BBC added: “The spokesman declined to say where Mrs. May was when the attack took place.”

The Guardian reported that “a man in black attack a police officer outside Parliament before being shot two or three times as he tried to storm into the House of Commons.”

See more photos and videos from the scene in London here: