Transcript for London terror attack: New barriers protect Changing of the Guard at Windsor Castle

Hey everybody I'm on the end of in New York while officials and London are today putting into place some new security measures. After last week's attack on the British Houses of Parliament ABC's Molly hunter covered those attacks for us and joins now live. From London with the latest on the ground there Molly what's going on where you live. It Marty on the outside. That half hour from where it. Actually acting exactly week where things are actually out front with their cats and I took and that they rent it. When there. I've need new security magic and asked imam at Nigel right here. Who actually kept up all night last night at least we're putting in the carriers were actors now you just have I don't. They. Yeah. Likes to eat but eat and I hope so box. Has to look. Size corporation of them considered one of us that it won't. Proud of coming in meals and great. Week about it we told. The war can not written this is purely. School rush you. Doing an album of them situation. Exactly what happened last beat right I'm just gonna. Bit back a look at that James can just imminent between its use steam as barriers in Britain had you can see those barriers just behind me there really happy days deal on. And not on the sidewalk to prevent exactly what happened. Last week where it that car hop the current and mow down people on Westminster bridge I'm just every night about Nigel. As we see increased security around city around country what do you think police. Well I am. Told police on the streets. As I've lived in New York's. You will. Not state. I bust them would you like we. Chris Hobson rim is. Would. I can see that some small town didn't. You can't country that would. Way. I think some of the biggest it is I think we should be. Again be on the street and with a moving around about the people this week company. Take it was situation authority. Would you feel safer and police in London I am now we do know that policeman died last week tragically was not aren't that feel safer and thank god and. I think the whole police in the to me should be side but didn't properly trained some of I'm always once again had mistakes in the United States. And so that was that that it five. Successful faith. That I think. But sentence more than. Mr. Goods trouble on the different sold and small but. People who. Well. Schools. Do this. We did speak with senate here fell Windsor residents who thought he's not. Quite an ice are pretty ugly actually to go when they were just for show begins tomorrow of course this isn't. Massive terrorist attacks cannot any did it tomorrow of course as the changing cards. You think there are quite nicer do you think they're necessary do you have any problem. I think. It would would you definitely is this. Faithful foot from throat open and sometimes. In the evening to have. And portable police stations don't have a big police that is flat people told you about that not very far away. That is I think UY available. Is removed basically. Why don't keep it that way have a bit it. Press at. All people on foot. But then won the two people will be stationed about. Something has to of these cells that there's an office from. It can be operation would move Iraq I think they do that it is in other places would go to and I think in the United States. An office of this we too. Pageant thinking semites are seeking an effect. I really appreciate it nice to see you thank you. He got half hour biker but on that speaking with you I'm just gonna show you. Behind me you've seen. Steel. Barriers and you see that yellow. Kind of going straight up that yellow fire which will come down tomorrow during the changing of the guard that I imagine Windsor Castle of course. That's massively popular tourist attractions has gotten any that we today but tomorrow is the changing of the guard and that's really why all of this has gone and took place. Somali Guinness has sent now obviously we know the significance of the potential threat. There are at Windsor Castle have you seen any other additional security. Around the rest of London or any other specific sites in the days since that attack. Now police have said that security here is a part of a countrywide. Review of securities that we certainly are expecting. Heightened security in lined up outside of lines and big tourist attractions like this around the country. In line and since that is at the attack we've certainly seen at Westminster area. Certainly kind of heightened patrol and heightened security there in addition to certain tube stations very close Hugh. Tourist areas but police have said and it and updating us regularly that. There's no specific threat there's no specific right on Windsor Castle. But they will be increasing as they feed and whether that's around they gave like tomorrow which is the change arts or whether that throughout kind of Ani. And kind of possibility of having massive crowd they well height and increase security. Appropriately. And mauling that you've you've. Lived in London you know what it's like there we spoke last week about how people were reacting in the immediate aftermath had it been so long. Since Lundin had been victim to this kind of attack. So how are people reacting was it. Sort of life back to normal within days or or if there's still a little bit of an aftermath feel there. That's exactly right on aligned and was waiting but London was ready we spoke with police who said this is the day that every. Every police department plans or and hopes they never have to actually use those plans but at those plants K and that taught her about every that's. But they were ready but everyone and on this front I can and even out here and went there has the same message we can't let them run our lives we can't. Dictate we can't let them dictate our daily lives we can't let them. Ruin what we would go on and you and that's exactly like is back to normal like its functioning inline and outside of Clinton is you can feed. So while there is an increase at security. The aftermath he all evaporated pretty quickly. That. Good name Aaliyah with while we happier we know you've been following this story for a ski tell us the latest. Anything else that we learn later officials have been able to share up out the attacker the 52 year old. In college this dude with the British ex con I believe. Any new interesting information that we've learned about him in the days since he was killed at that attack. And we did hear from his white for the first time that she was shocked and at and I'm but smoggy tells happened coming out on a regular basis. Patents raids in Iraq have have been happening as well at the end of last week as we get Scott. And the investigation. By now accounts is certainly ongoing as they try to piece together these clues about the attacker again that. His wife said he was kind of a violent guy but she was certainly surprised. By the fact that he was of course the attacker on I would say the other thing. In their major development since we've last spoken with hearing from the American family am hearing from. The family of Kirk Cochran occur Cochran with on. That really tragic story that we talked about so much last week was on his. A 25 anniversary trip with his wife left and her with one of the four victims. Last week his wife analysts say is still in the hospital recovering with a broken lake and it broke red and we heard from her family yesterday. There is an outpouring. Gratitude for both. Medical person now and authorities here who have helped them hostages detonations. And and everyone is kind of gathered around eight that they felt incredibly loved. I'm coming to lend and they actually a lot of them flew over front you taught just his speaking is Scotland Yard yesterday. It's about as yet there thinking about an eighth. They talked a lot about how wonderful her lies and and how current molested him. Kurt first trip overseas and he couldn't wait to get back an outlet all of their trip. So it was. Athletes have to be here from her parents if that they've actually been living in line at and that they would wait from the let's it recover. And and they would buy back the US with her. And lasting only four we let you go we know that the Islamic state ice that had actually claimed responsibility. For the attack has officially been able to make any kind of definitive links. Between any of missed in the suits travel or online activity and anyone in the Islamic states. They haven't yet adds Miller called it the language of that claim. Whistling would actually heard before with very similar language to went at it on state. My attic claim for that her land attacker which is over just before Christmas. When he drove a massive tracking through Christmas market. And the language that ice is used in this claim suggested that this attack was inspired but not to racked it. By ice so it certainly didn't claim a direct linking no kind of command and control. But suggesting that. They use the exact same language actually is villain with a soldier of the Islamic state. That suggesting that actually think it he had been inspired weather online. Whether through communities here I've Birmingham where we knew he was most recently living they note no specific direct links and when in the organization. And officials are certainly still. Matt mapping together his web of connections to try to figure out exactly when that radicalization happened the extent that radicalization. And and where he may have picked at picked up the tools picked up the idea Adam and actually decided to start planning the brutal attack us. And we know you're gonna stay on top of those details for asked ABC's Molly hunter live at Windsor Castle for us with an update thanks line. And colonel was good abcnews.com. For more on that story and others. For now stay here for your latest live streams happening here and around the country I'm comment about let's see you back here and.

This transcript has been automatically generated and may not be 100% accurate.