Transcript for New video of London Bridge terror attack depicts 18 minutes of horror

We also have new images this evening from inside the terror attack in London. A clearer portrait of what happened there. People running for their lives. Three attackers using that van to plow into pedestrians. And this new surveillance video tonight, showing a restaurant manager holding the door there on the left, as the attackers are pushing from the outside, armed with their knives trying to get inside. ABC's chief foreign correspondent Terry Moran from London tonight. Reporter: The traumatic moments of terror up close. Watch as this restaurant manager hustles inside. They close the front windows. One woman pierce out, see the attackers, turns and runs. Watch. You can see the attackers approach, trying to enter, a terrifying tug of war begins as the manager guards the doorway and forces the door shut justs as one of the machete-wielding attackers tries to get in. The attacker pushes. Patrons peeking outside to see if all is clear. Then this -- I'm trying to keep myself safe. Reporter: The photographer caught outside, as the police opened fire on attackers. People fleeing the scene. Those moments coming during the 18 minutes of terror that seemed an eternity. At 9:58 P.M., the attack begins, that van runs off the London bridge. At the south end of the bridge, three men with long knives get out and start slashing people. At 10:08 P.M. Police are called to the scene. At 10:16 all three suspects are dead. Their phony suicide vests failing to keep police at bay. 50 shots fired by 8 officers. Today the people of London walked back to work on that very bridge as a show of force and new barricades protecting the sidewalks on several bridges. We're learning more about the victims. 30-year-old Canadian Chrissy Archibald. Her family releasing a statement urging people to volunteer at a homeless shelter. London mourned them all today. Mayor Sadiq khan, first Muslim elected to the position, hurling defiance at the terrorists. I say this, you do not commit these disgusting acts in my name. Reporter: Many here expressing the wound this whole city has suffered. It's not just the victims. It's everybody else. It's the whole community. Reporter: British prime minister Theresa may saying this. We can't go on like this, enough is enough. Terry, prime minister may was pressed today asked if these three terror attacks in the last three months were in fact related? Reporter: And David, she said they are not linked by a common network but they are bound together by what she called a single, evil ideology of islamist extremism. David. Terry Moran live in London. Terry, thank you. As you know, new video of the attackers before the attack,

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