in wales, searched by police. one in wales, three in birmingham and one in east london. that east london address, i understand, is worth 39—year—old woman arrested overnight and she, i think, is the partner all seven of the other arrests made overnight and one of them this morning took place in birmingham. birmingham isa morning took place in birmingham. birmingham is a strong focus of this investigation were the hire car is believed to have been hired from that was driven across the bridge. it is where the suspect, khalid masood, is believed to have been living in recent years, although he was born in kent, british born and bred. the latest update on injuries, the police say five people remain in a critical condition, two of them with wife threatening injuries. daniel, just stay with us. we're

just looking at pictures from trafalgar square, —— life—threatening injuries. we had that poignant vigil for the three people killed by the attacker, khalid masood, yesterday. and others injured in that attack who are still in hospital, still critically injured. and defiant messages from the home secretary and the mayor of london at that vigil. khalid masood, the prime minister was saying earlier on in the commons that he had been a peripheralfigure, although he had been on the radar of mi5, he was not part of any current intelligence picture. and that is a real problem for the intelligence services, when it isn't a wider conspiracy, it is apparently one man acting like this, with such deadly consequences. his background is

interesting. first of all, he is 52, which is quite unusually old for people involved in an attack like this. he certainly has a violent criminal history. his most recent conviction was in 2003 when he was convicted of possessing a knife. in more recent years he has not had criminal convictions. although he appeared on the edge of this investigation into violent extremism, he did not become a major suspect the investigation and slowly drifted off the radar of the intelligence services and police, and was not part of any current investigation, and that gives the police a problem. there are some people that they are very worried about, typically 2000—3000 at anyone time that have to be kept under watch of some sort that any one time, and those people are just off that watch list are the ones you find it easier to hire a car and dry through a crowd of tourists in central london and then launch a knife attack on the houses of parliament. that is always the

problem. people can radicalise quite quickly, or the circumstances of their life can change quickly, and they can suddenly decide to carry out some kind of specific, violent act. don't forget, the police still regard this as being and is not —— islamist inspired attack and it is worth saying that a twitter account linked to so—called islamic state has said that they were responsible for this attack, although for the police, i don't think that is a central part of the investigation. what they want to know our who are the associates of khalid masood and didn'tany of the associates of khalid masood and didn't any of them know what was happening or, even worse, help him carry out this terrible carnage right at the seat of britain's democracy. and 33, interesting that the prime minister said when she was talking to mps, that the current threat level is critical, rather

than severe, the highest level, so suggesting, really, that this event yesterday was a one—off. suggesting, really, that this event yesterday was a one-off. yes, these things are always to do with assessments. the assessment, even in the immediate aftermath of the attack yesterday was that appeared to bea attack yesterday was that appeared to be a one—off. at no point did we see the threat level publicly go up above severe. that still means that an attempted attack is believed to be highly likely, but it doesn't mean that an attack is believed to be imminent which is what the critical threat level means. it means that for now they think that this was a one—off. one other thing worth saying is that, whenever a police officer shoot somebody there has to be an investigation by the ipcc, and the metropolitan police and the ipcc have said that such an investigation has begun, and the

investigation has begun, and the investigation into the circumstances of the incident, but at this point, no police officer is under suspicion, which gives you an idea of the approach that the ipcc will be taking to this investigation. many thanks, daniel sandford, home affairs correspondent, with the latest on the police investigation. let'sjoin our colleague latest on the police investigation. let's join our colleague christian fraser who is down the road across parliament square from me at westminster. yes, we havejust been walking around this evening trying to get a feel for the cordon at the moment. quite a big police presence outside westminster abbey. we're at the other side of the bridge. you can see the carriage gateway pc keith palmer was killed, and around that area a forensic team have been walking up and down making sure that they have not missed anything. the objective is to get this busy area of central london open again as

quickly as possible. some of that work will go on through the evening as they try to tie up anything that they might have missed in the in course of the complex investigation. as daniel was saying, from tomorrow you would expect the investigation to move away from here, very much into the background and relationships of khalid masood. what is also very visible, it's my first time down here today, just how many people are around going about their business. we have heard from the acting met police commissioner who has said that what has happened cannot be on done, but what is important is the response. people have been coming down to lay flowers just where we are broadcasting, many of them just coming out of their offices in fairly determined spirit. when i came into work this morning on the train, the same people i see every morning, getting on with it, as london tends to do, and making sure that we were not cowed in any

way by what happened yesterday. it is quite interesting, christian, that where we are, westminster bridge, which is the focal point of what khalid masood did yesterday, killing and injuring so many people, but this is now open again, whereas other roads around westminster are still closed including milbank and other major roads around parliament square. one of the other interesting things, some who works in one of the ministries here was talking about it yesterday, what was particularly impressive about the security services' response is how they kept some of these narrow roads open and closed off the area around westminster quickly, but what they did not want was traffic backing up in this area. this has obviously been rehearsed in the past. what you don't want is people getting eye ra ke don't want is people getting eye rake and stressed by trafficjams in

an area that is potentially under attack. —— people getting irate. they have worked out which roads to keep open and wish to keep clear to get traffic out of the area. it is obviously being done quite skilfully. that in itself is reassuring, it is a sign from the police who have been very visible around westminster today, the professional way that they have dealt with this. they have practised it many times. they were trained for it, even at the weekend. they don't wa nt to it, even at the weekend. they don't want to put it into practice but when they did have two, it seemed to go very smoothly aside from the very sad death of pc keith palmer. christian, many thanks. christian fraser, there for us. that visual we are seeing at trafalgar square included minutes' silence for the three people who died at the hands of khalid masood —— that vigil.

ays ha of khalid masood —— that vigil. aysha frade, kurt cochran, an american citizen and a police officer, pc keith palmer. sadiq khan, the mayor of london that the fight message at that vigil in trafalgar square, saying that londoners will never be cowed by terrorism —— with a defiant message. amber rudd, the home secretary, also with an equally defiant message. terrorists, she said, will not defeat us. we will defeat them. and we saw defiance from mps in the chamber of the house of commons today. simply by having a debate on what happened yesterday, by getting back to work, that was a message of defiance. and the people who came out on streets around westminster and to attend that trafalgar square

vigil showed that they will not be cowed by terror. you are watching bbc news. you're watching bbc news. thanks to ben brown down in westminster. we will be back there at 7pm with my colleague christian fraser for at 7pm with my colleague christian fraserfor more reaction at 7pm with my colleague christian fraser for more reaction to the london terror attack. in other news, the funeral of the former ira commander and northern ireland deputy first minister, martin mcguinness, has taken place in londonderry this afternoon. his coffin was carried through the streets and thousands attended the funeral. the former us president bill clinton was there. so, too, was arlene foster, the democratic unionist party leader. mr mcguinness died on tuesday. he'd been suffering from a rare heart condition. our ireland correspondent chris buckler reports.