Unfolding Outside News Today : Breaking News, Live Updates & Top Stories | Vimarsana

He's already being called a hero because he administered mouth to mouth resuscitation to the police officer who was actually struck by the assailant in front of the houses of parliament. that police officer, sadly, has since expired from his injuries. but some very startling scenes from central london. as we learn more we here are going to be bringing you more details on the attack and the identity of the attacker, steve. >> all right. matt bradley over there in london. matt, thanks for that. joining me now here in studio, michael balbony, former security advisor, thanks for taking a few minut...

Adjacent building. then a suspicious package in the area. and that's why we had been evacuated. and then basically held in a building several down from where the incident happened for the last three to four hours. so, people who were just been having coffee one minute suddenly ushered into a room, everyone's sitting around being very british about it. not really complaining, obviously very concerned for the scenes unfolding outside, then, of course, news filtered in of the attack on westminster bridge and the notions that pedestrians, innocent people, tourists had been mowed down, filtering th...

And you can hear some of the gunshots in the background. and just to give you a sense where have this is, this is shot with the audience that you're actually facing the houses of commons. so off to the left is westminster bridge. and that was where the assailant was believed to have driven up and crushed several people. i think killed two people on that bridge before coming down out of that four by four and attacking the parliament. now there's already been other startling scenes that have come out of this. one woman who threw herself -- believed to have thrown herself off the bridge. fished o...

Only one attacker, but, be foolish to be overconfident so early on. so as i've said, precautionary basis, we're locking down the area, doing all the necessary searches so we can be completely confident everyone is safe. >> reporter: so i've been walking around this area for the past couple of hours. and really, it's quite striking. the police really have just cut off so many of the entry ways to the central square behind me. as you can see now, several hours ago, there were police going back and forth and ambulances with their sirens blaring and lights flashing, and now, everything is more or ...