A video filmed by David Davies, a British lawmaker, on his mobile phone shows scenes of panic inside the parliament during the London lone-wolf attack on Wednesday (March 22) which killed four people including the attacker and wounded at least 40. <br /> <br />The video shows people running along the corridors of the parliament building and yelling "get back" and and "is he coming?". <br /> <br />The attacker was British-born and was once investigated by MI5 intelligence agents over concerns about violent extremism, British Prime Minister Theresa May said on Thursday (March 23). <br /> <br />The Islamic State group claimed responsibility for the attack in a statement issued by its Amaq news agency. But it gave no name or other details and it was not clear whether the attacker was directly connected to the group. <br /> <br />The assailant sped across Westminster Bridge in a car, ploughing into pedestrians along the way, then ran through the gates of the nearby parliament building and fatally stabbed an unarmed policeman before being shot dead.
