this is bbc news. i'm martine croxall. the headlines at 7pm: "no place to hide". the home secretary says intelligence services must have access to encrypted messages. khalid masood is thought to have been using whatsapp moments before he killed four people. there should be no place for terrorists to hide. we need to make sure that organisations like whatsapp, and there are plenty of others like that, don't provide a secret place for terrorists to communicate with each other. more than 30 people have been injured, two seriously, after a suspected gas explosion on merseyside. in russia, police clamp down on anti—corru ption protests held across the country. more than 700 people are arrested in moscow. among those detained is the country's main opposition leader. sinn fein says it's the "end of the road" on power—sharing in northern ireland, as talks break down ahead of tomorrow's deadline. and england take the lead over lithuania at wembley in their world cup qualifier thanks to a second half goal from jamie vardy. they have beaten lithuania. good evening, and

welcome to bbc news. the home secretary, amber rudd, has increased pressure on internet companies in the wake of the westminster attack, warning them not to provide a secret place for terrorists to communicate. it's understood that khalid masood, who killed four people on wednesday, was using the secure whatsapp messaging service shortly before he began his murderous rampage. it is not known what was communicated. whatsapp says it is cooperating with the authorities. 0ur correspondent jonny dymond reports. has the freedom to say what you want online and keep it private run into our need for security in an age of terror? khalid masood was active on the messaging network whatsapp just before he started his murderous rampage. whatsapp messages are encrypted —

only the sender and the recipient can see them. masood is said to have been acting alone, but the authorities would dearly like to know what he said and who he said it to before he began. the security services, says the home secretary, need access. we need to make sure that organisations like whatsapp, and there are plenty of others like that, don't provide a secret place for terrorists to communicate with each other. it used to be that people would steam open envelopes orjust listen in on phones when they wanted to find out what people were doing — legally, through warrantry — but in this situation, we need to make sure that our intelligence services have the ability to get into situations like encrypted whatsapp. the home secretary says she'll be talking to the big tech companies this week about loosening the privacy around messaging networks. for law enforcement, change cannot come soon enough.

at the heart of this is a stark inconsistency between the ability of the police to lawfully intercept telephone calls but not when those messages are exchanged via a social—media messaging board, for example, and that is an inconsistency in society, it surely is, and we have to find a solution through the appropriate legislation. it's notjust encrypted messaging that alarms the government. there's also deep concern over the threat of online radicalisation — websites that glorify violence and encourage viewers to take part in terror. it's not hard to find. the tech companies say they take material like this down as quickly as they find it. a new law on encryption, says the labour leader, would go too far. they have huge powers of investigation already, there is a question of always balancing the right

to know, the need to know, with the right to privacy. whatsapp says it is cooperating with the police, but the trade—off between freedom, privacy and security is under sharp scrutiny, as the country mourns the carnage of wednesday afternoon. jonny dymond, bbc news. in the last hour, it's emerged that there's been another arrest in connection with the attack. a 30—year—old man from birmingham is being questioned. the police believe khalid masood acted alone on the day but have been appealing for more information from people who knew him or came across him. our home affairs correspondent tom symonds reports. it took little more than a minute — a crude assault on the heart of westminster which left its victims in its wake. khalid masood mounted the pavement on westminster bridge atjust after 2:40pm, according to new information from the police.

he drove fast, sending people running for cover, and 30 seconds later crashed into railings. someone managed to make the first 999 call within 21 seconds. but masood was out of the car and, after attacking a police officer, was shot dead half a minute later in the grounds of parliament. from start to finish, it had taken 82 seconds. so those are the facts, but why did it happen? tellingly, police now say they may never know the answer to that question, but they are looking closely at khalid masood's life in an attempt to discover what motivated him. today, yet another home was being searched near his most recent address in birmingham. one man who lives around the corner is still in custody. we know khalid masood had a violent past, but there were times in his life when he may have adopted extreme political views, possibly while serving a prison sentence in 2003, or during two periods living in saudi arabia,

or after moving to luton around 2010, at a time of confrontation between young muslims and right—wing activists. the kind of people who commit terror... the answer to that question — why — could be complex. there can be anything between 15 to about 28 different reasons, different tell—tale signs, and my argument has consistently been that the government has obsessively focused on one, which we refer to as islamist ideology. ideology is important, but it is but one factor. this tragedy has again led to questions about the government's strategy to fight radicalisation. those who have to spot tomorrow's potential terrorists say the challenge is daunting. tonight, the met have said that there is another arrest, a 30—year—old man ta ken there is another arrest, a 30—year—old man taken into custody on suspicion of preparing for terrorism. that is on top of the

58—year—old man also arrested in birmingham who has been in custody now for three days, and a 32—year—old woman who has been released on bail. most of the searches that you see there have been taking place, they are now complete, just one is still ongoing. this is a sense that this is just the end of the beginning. tom symonds reporting. we will find out how this story is covered in tomorrow's front pages at 10:30pm and 11:30pm this evening in the papers. we are joined and 11:30pm this evening in the papers. we arejoined by and 11:30pm this evening in the papers. we are joined by caroline frost and political journalist tony grew. sinn fein says that the power—sharing talks have come to an end. the party say they do not intend to nominate stormont leader michelle 0'neill as deputy first minister. tomorrow afternoon as the formal deadline. more than 30 people have been

injured, two of them seriously, in what's suspected to have been a gas explosion on the wirral. the blast caused extensive damage. it could be several days before people who live in the area are allowed to return to their homes. linsey smith reports from the scene. the scale of the devastation shows just how powerful the explosion was. one of the three businesses that stood here was a dance studio. just an hour before, it had been full of children. the blast was heard six miles away. this sound of the building blowing up was captured by a car's dashboard camera. explosion. 33 people were taken to hospital. there is a multitude of injuries that have happened. but the two patients that have gone through to the major trauma unit at aintree, they've had significant injuries. within one of the damaged homes, christine pickup had been baby—sitting her grandchildren. i don't know how we walked out of there. i think the children, because their bed is slightly higher than the low windows in these old houses, the blast lifted

the mattress up and threw it over the children, cos they said they felt things hitting them, but they weren't bruised or sore, and i think the mattressjust saved them with the...masonry. police are now leading an investigation. a number of local people say they smelt gas yesterday and on friday. national grid engineers are at the scene, and say they have found no faults so far. with the scale of damage here, many residents will spend at least another night out of their homes. the community here say they are shocked by the events of the last 2a hours. but it will be sometime before their quiet residential area is back to normal. not only does the rubble from the damaged building have to be removed, but beyond that, there are homes that simply have no windows or doors because they were blown out by the force the blast. that means there are going to be

people here who are displaced for some time to come. the labour leaderjeremy corbyn says he will oppose plans to give ministers the power to change some aspects of the law after brexit without pa rliament‘s prior approval. he was speaking ahead of the publication on thursday of government plans for what will happen after britain leaves the eu in two years' time. the government wants to include the powers in its great repeal bill. more details will be published later this week. some still might not we are europe! some still might not want it, but brexit is beckoning. the majority voted, and the government is about to start the formal process. parliament will see the historic moment this week, followed by details of the government's plan to give control over uk laws to westminster instead of brussels. some warn, as this complex work begins, mps must be involved. we're not going to set there and hand over powers to this government to override parliament, override democracy and just set down a series of diktats, what's going to happen in the future.

so what does the government plan? it will introduce a great repeal bill, bringing eu regulations into domestic law — everything from environmental legislation to workers' rights. then the regulations can be changed or abolished after brexit to suit the uk. the bill will also include powers for the government to amend some eu laws during the process, without full parliamentary scrutiny. the government has already faced battles over parliament's role in the brexit process, and a great repeal bill looks like it could be the next big skirmish. some mps and peers fear they'll be cut out of key decisions. the government insists they will have a say and says major policy changes, like new immigration or customs controls, will be subject to full scrutiny. but ministers say there must be a way of making small technical tweaks, like on picking some of the eu terminology.

-- light —— light on picking. it will a limited and defined power, not to act like a dictator, by secondary legislation, and the scope, the scope, the definition of those powers and when they can be used, in what circumstances, is something that parliament will have to approve in boating through the bill itself. but some resistance is likely. the sheer complexity of brexit means very little will be plain sailing. alex forsyth, bbc news, westminster. alex is with us now. how controversial is this great repeal bill? didn't we know right from the start that there would have to be a mechanism by which everything was taken in hand? we have known about this for some time. theresa may announced it during the conservative party conference last year. she said the idea of the bill was to make the uk sovereign and independent so that laws are no longer made in brussels, we no longer have the supremacy of the eu law, that is taken back to

the eu law, that is taken back to the uk. the idea of this bill is to make that happen. this is so complicated, there are swathes of regulations that date back years about all sorts of things which are kind of tied up into the eu, and some of it in the uk. what the government has tried to do is take all of it in, and then we will give ourselves some time to go through it and parliament will take a look and see which bits work and which bits don't and amend them as necessary. the only bit that is proving controversial is the idea that the government can make some amendments to some laws without the full parliamentary scrutiny. jeremy corbyn making the point that they do not want to be cut out of the process. there is something odd about it in that if the idea is that we get out of europe so that we can make all of our own decisions, to be taking in all of that eu law is a bit of. the idea behind it is to provide a smooth transition, if you like. businesses and farmers have been operating on the basis of eu regulations for such a long time, to

suddenly lose all of that would not providing a framework for guidance. the idea is to take all of it in so that there is a transition period and work out which bits need to be changed and how. but how long is it really going to take? imogen years —— i imagined years for each part of that legislation to be properly scrutinised by two houses. the government says it needs this power to make small technical changes without going through the whole process , without going through the whole process, otherwise it is practically impossible to get this through the house of commons on the house of parliament. they are clear that big changes, things like immigration laws and customs laws, will have separate bills that will go through parliament. even with this discretionary power, this is a huge task. you are watching bbc news, it is almost 7:15pm. the home secretary says intelligence services must have access to encrypted messages. khalid masood is thought to have been using whatsapp moments before he killed four people. more than 30 people have been

injured, two seriously, after a suspected gas explosion on merseyside. sinn fein says it's the "end of the road" on power—sharing in northern ireland, as talks break down ahead of tomorrow's deadline. police in moscow say around 700 people have been arrested at an anti—corruption protest. thousands took to the streets to protest against corruption. among them is russia's main opposition leader. alexei navalny organised the demonstration which saw thousands take to the streets in several russian cities. people joined the rally is all over russia, defying bands on staged marches. they are thought to be the biggest anti—government protests in five years. here on pushkin square in the centre of moscow and the crowd is chanting, we are russian. there several thousand people who have covered here. the russian authorities say

that this anti—corru ption here. the russian authorities say that this anti—corruption protests is illegal. but people have come onto the streets anyway. there is a very heavy police presence. a short while ago one man tried to unfurl an anti—putin poster on the statute, but the police pushed their way into the crowd and grabbed him. the crowd we re the crowd and grabbed him. the crowd were shouting, disgrace, let him go. the level of corruption is too high in russia right now. every citizen understands it. it is hard to live in corruption atmosphere. i have children, grandchildren. and i... i can't breathe in this. so now the riot police have moved on to pushkin square. the police have been telling the crowd all afternoon that this is an illegal meeting. it looks as if the right police intend to clear the whole square of protesters. meanwhile we hear that the opposition activist and anti—corruption campaigner alexei navalny has been detained by police just up the road from here. he is

the man who called people onto the streets, not only in moscow today, but across russia. well, the riot police have now cleared protesters from pushkin square. and they are lined up all the way down through the main street in the russian capital. people came out in moscow today to protest against corruption in the russian government. but this sends a message to the crowd that fighting corruption is not a priority for the russian authorities. steve rosenberg, bbc news, moscow. was killed and 16 others injured when at least two men opened fire in a nightclub in cincinnati. they have named a victim as a 27—year—old. 27—year—old 0bryan spikes. 16 others were injured. at least two men opened fire in the club. they said hundreds of people were in the club at the time and described it has a horrific situation.

it is not clear what prompted the shooting. a short while ago, the police in cincinnati held a news conference and gave an update on the investigation. last night, at about 1:30am, our emergency communications section began receiving calls that shots had been fired with injuries inside the cameo nightclub, which is located at 4601 kellog ave in district 2. as the night unfolded, and the initial investigation began, it was determined that the bar was very crowded. approximately a couple of hundred people. and what we know at this point in the investigation, several local men got into some type of dispute inside the bar. and it escalated into shots being fired from several individuals. as a result, there were 16 people that sustained gunshot injuries. one of which is deceased.

a total of 15 others that were injured. one in extremely critical condition in addition to that. several others, more serious injuries, and some very minor and were released. the individual that was deceased at the scene has been identified and his family has been notified. mr 0bryan spikes, 27 years of age. elliott isaacs from cincinnati police. early indications are that angela merkel‘s cdu has strengthened its

edition as the largest party. it is seen as edition as the largest party. it is seen as an edition as the largest party. it is seen as an indication of her chances of staying on as chancellor in the german general election in the autumn. in hong kong, at least 18 people have been injured, one seriously, after an apparent escalator malfunction in a shopping centre. the escalator was packed with shoppers when it apparently went in to reverse at high speed and dozens of people were thrown to the bottom. one man received a serious head injury. a spokesperson for the langham place centre said the escalator had passed a recent safety inspection. more now on those comments made by the home secretary amber rudd this morning, where she called on intelligence services to have access to encrypt it messaging services like whatsapp. her comments came as it emerged that the attacker in westminster on wednesday had used the moments before killing four people. to discuss the feasibility of what the home secretary is calling for, we are joined by a technology specialist who runs the

website gadget detective. thank you for joining website gadget detective. thank you forjoining us how realistic is what the home secretary saying? she wants the home secretary saying? she wants the intelligence services to be able to look at messages that are end to end in crypt. well, a back door can be built into a phone or another device to allow for that. but then that back door will be there for everybody, not just for the that back door will be there for everybody, notjust for the good quys everybody, notjust for the good guys but criminals, extortionist, foreign powers will be able to hack it, if a block is made weak, it is wea k it, if a block is made weak, it is weak for everybody. without the back door, what hope is there, that they could provide the content? the way that they struck to the secure services, whatsapp may not be able to provide it, because they do not hold a copy of the message themselves. so when they are served with a legal document they say, well, we don't have it. but there are powers here. the government in this country has just passed the investigatory powers act at the end of last year. that gives them the power to hack blue bulls devices

legally. that means that they can ta ke legally. that means that they can take over some bodies device before the message leaves the phone and becomes encrypted and this sends end to end in crypt it. it can be gathered and in fact all of the data on the phone can be gathered. but all of this, whatsapp never used to be encrypted in this way. it is a reaction to the snowdon revelations, and it is a reaction to this sort of legislation that has come in, where those companies, tech companies, lost a lot of... they suffered reputational damage because it was found that there are information was leaking like a sieve. in reaction to that, to reassure their users, they said that they would encrypt them. how likely is it that a government could outlaw encryption of this kind was lowered they can do it. then iphones would not be legal to buy and sell in this country, other security devices and services. the problem is that, even if the phones are rendered weak, it is still

possible for third parties to write softwa re possible for third parties to write software that will still encrypt, so the bad guys will still write that softwa re the bad guys will still write that software and have it made and use it. so the only people that lose by at the general public. the home secretary suggested that in the old days the intelligence services would listen in on phone calls or steel open envelopes over the castle. how releva nt a open envelopes over the castle. how relevant a comparison is that these days when you think about how much electronic information is flying about brazil that is a bit disingenuous. yes, they could listen in ona disingenuous. yes, they could listen in on a phone call or steel open a person's envelopes. but what they never have the power to do, they say that they want the same powers and the electronic age, but it is more than that. what it allows them to do and what we have found security services have been doing, is forming everybody‘s data. they never had the power to open everybody‘s envelope and listen to everybody‘s phone calls. they had to be selective and use a warrant. but now it is possible to draw everybody‘s

communications. if messages were unencrypted, just how many agencies would be able to look at what we are sending? everybody. i mean, it wouldn't need to be an agency, you know, the average teenager buying certain tools online could do it very easily and very cheaply. can we afford these freedoms, then cover these privacy is, if we are on the one hand expecting them to send backwards and forwards what we want, but also expecting the intelligence services to keep us safe? well, can we afford not to have freedom of speech? that is what were talking the ability to communicate without other people being able to listen in isa other people being able to listen in is a basic freedom. if we want to give that up, then we can. that's not a technology choice, i guess. that is probably not a fair question and was due, but i did! thank you. —— to ask you. let's take a look at some of the other stories making the news this evening. cleveland police have released the names of two boys whose bodies

were found at the foot of cliffs at saltburn—by—the—sea on friday night. harry watson and alex yeoman, from east cleveland, were both aged 17. police are still trying to establish what happened, but are not treating their deaths as suspicious. divers from the irish navy have recovered a body from the wreckage of the coastguard helicopter which crashed earlier this month. a postmortem examination will be carried out later today. the aircraft was providing cover for another coastguard helicopter on a mission when contact was lost. three people are being treated in hospital after a car mounted a pavement and hit a group of people outside a pub in north london. four teenagers have been arrested. the police say the incident in islington is not terror—related. let's bring you an update on the situation at stormont. talks have been underway to try to put together another power—sharing executive there. after the elections recently. but sinn fein have said that they

are at the end of the road with those talks, and that they are not ina those talks, and that they are not in a position to nominate their leader, michele 0'neil, as the deputy first minister in the power—sharing executive. we have just had a statement from the dup leader arlene foster, who says, while regrettable, the reality is that sufficient progress was not achieved in the time available to form the new executive. the dup was ready to form a new administration without preconditions. so as to allow us to have a budget and to deal with the many matters that currently face northern ireland. it goes on to say that initiation school on ever be successful when parties are prepared to be flexible to secure outcome is. to date there is little to suggest that sinn fein wa nt to is little to suggest that sinn fein want to secure an agreement. at every other opportunity they have resisted involving other parties, no roundtable discussions were possible during this round of talks. any future discussions will have to be ona future discussions will have to be on a more solid footing. throughout the course of saturday, sinn fein

behaves as if they were the only party whose mandate mattered, this cannot and will not be the basis for a successful outcome. the dup stands ready to continue to discuss how we can new arrangements for northern ireland. a very critical statement there from the dup leader and the prospect is that there could have to be yet more elections very soon in northern ireland if this impasse cannot be got through. we will bring you more reaction to what is happening in those talks later on here on bbc news. carrie lam has been elected as hong kong's new leader, the first woman told the top job. she had the backing of the chinese government in beijing and was widely expected to win. hong kong selects its leader by a specially chosen committee rather than giving everybody a vote. the winning moment. carrie lam is the first woman chief executive elect in hong kong, but she didn't

get to soak up the applause for long. shouting minutes later, a group of activists protested against her win. they carried yellow umbrellas, a symbol of the 2014 democracy protests, and john did, i want universal suffrage, as she stood on stage —— and charted. the former civil servant was undaunted. my priority will be to heal the divide and to ease the frustrations, and to unite our society. there was little sign of unity outside the voting venue. carrie lam was elected not by the people, but by election committee largely loyal to beijing. these activists are protesting against the entire election process, calling it a sham. carrie lam has promised to heal divisions in society, but given the lack of widespread public support for her, that could be very difficult to achieve. we are here to

protest against hong kong's small circle chief executive elections. now, as we all know, hong kong people do not have the right to choose their own chief executive. i do not have any hope that carrie lam will solve hong kong's social issues. the chief executive elect has become an increasingly divisive figure. despite her promise to unite the city, some are warning of a governance crisis once she takes office. the first dinosaurs may have originated in the northern hemisphere, and could even have lived in the area that's now britain. that's just one of the findings in a new study published in thejournal nature, which suggests that theories about dinosaurs that have been around for over 100 years could actually be wrong. 0ur science correspondent pallab ghosh has more. fossilised bones that capture a time that dinosaurs ruled the earth, more than 65 million years ago. by measuring how they changed over the years, researchers worked out

how they are related, and how they evolved. but a new reassessment published in thejournal nature, which suggests that that theory which has lasted 130 years, maybe wrong. the current theory is that there are two main groups of dinosaurs. one, which includes the stegosaurus, and another, which has two branches. the vegetarians such as the brontosaurus, and the meat eaters, such as the savage tyrannosaurus rex. it turns out that the meat eaters are in the wrong group, and should be with the stegosaurus. it also shows that the very first dinosaurs did not originate in what is now east africa, but much further north, possibly in an area which is now britain. we've taken dinosaur origins, which originally were thought to be southern hemisphere, and brought them into the northern