this is bbc news with the latest headlines for viewers in the uk and around the world. i'm kasia madera. a police officer dies after being rammed by a car outside the us capitol building in washington. another officer is being treated in hospital. the suspect, who emerged from the car with a knife and ran at officers, was shot and died in hospital. the suspect did start lunging toward us capitol police officers, at which time us capitol police officers fired upon the suspect. the us national guard has been deployed in the area. the us capitol was put on lockdown. the top homicide investigator for the us city of minneapolis gives evidence on day five of the george floyd murder trial.

dozens of british mps call on the government to abandon any idea of vaccine passports to help reopen the economy. hello, and welcome if you're watching in the uk or around the world. a police officer has died and another has been hospitalised after an attack on the us capitol. the attacker, 25—year—old noah greene from the us state of indiana, rammed a car into a barricade and then emerged brandishing a knife. he was then shot dead by police. president biden said he was heartbroken over the death of the officer, william evans, who had

served for 18 years. this is the second time the capitol has been targeted this year, after supporters of donald trump stormed the building injanuary. here's our north america editorjon sopel. sirens wail. we've been here before. lunchtime on a cold easter day, and another emergency at the capitol. a man in a blue car rams two us capitol police officers near a barrier. as he gets out of his vehicle, knife in hand, he's shot and has now died. immediately, congress goes into lockdown. a helicopter�*s summoned and lands in front of the capitol building. and the national guard, which has been on duty since the capitol riots of january the 6th, is mobilised. another terrifying moment for those who work in the congressional offices. at a hastily organised news conference, confirmation that one of the police officers has died as well. and it is with a very, very heavy heart that i announce one of our officers has succumbed to his injuries.

but the assailant doesn't seem to have been on anyone�*s radar screens, and police are saying there doesn't seem to be an ongoing threat. it does not appear that he is known to the capitol police or the metropolitan police department at this time. sir? is this a terrorism—related incident? _ it does not appear to be terrorism—related, but obviously we'll continue to investigate to see if there's some type of nexus along those lines. it was only a few days ago that some of the intense security around the capitol, following january's shocking assault, was eased. just a week ago, the driver wouldn't have been able to get as close to the building as he did. what's happened today may be totally unrelated to the events of january the 6th, but there's a terrible sense of deja vu, a further heightening of the feeling of vulnerability. and once again, above america's august and imposing capitol building, flags have been ordered to fly at half—staff.

jon sopel, bbc news, at the capitol. let's speak to barbara plett usher, our us state department correspondent, who's been monitoring events from outside the us capitol. once events from outside the us capitol. again the us c attack once again the us capitol under attack in a shocking situation for the country. attack in a shocking situation for the country-— the country. yes, it is. in fact i have to say — the country. yes, it is. in fact i have to say that _ the country. yes, it is. in fact i have to say that over - the country. yes, it is. in fact i have to say that over the - the country. yes, it is. in fact i have to say that over the past | have to say that over the past weeks, i think the city had begun to relax a bit more because since january the 6th there have been a massive security increase around the capitol building as you know. there had been some warnings about possible attacks but nothing had happened. and now something has swivel are on edge again and nervous about what to expect. now this is nothing like on the scale of course of what happened on january the 6th, which was a of what happened onjanuary the 6th, which was a mob storming of what happened on january the 6th, which was a mob storming the capitol building with arms, hunting down

congresspeople, attacking police officers. this seems to be a one—man attack. at this point it appears that he acted alone. it's also not at all clear that he might be connected to some kind of political or other cause. the officers who spoke to us earlier said that they were not calling it a terrorist attack, and this man has not appeared on law enforcement radar before. he is not known to police. so it's not clear what his motivation was in that office will be a big part of the investigation. but it has rattled people to come three months afterjanuary the 6th and some of the congressional aides that the bbc spoke to said it did make them nervous, especially with the security around another attack it happened. find the security around another attack it happened-— the security around another attack it hauened. �* , , it happened. and the president has issued a statement _ it happened. and the president has issued a statement saying - it happened. and the president has issued a statement saying that - it happened. and the president has issued a statement saying that he l issued a statement saying that he was heartbroken at today's event. that's right. he said he was heartbroken and offered heartfelt condolences to the family of the

officer who was killed. william billy evans was his name. he was 18 year veteran of the capitol police force. this is a second officer in the everyone police force to die in the everyone police force to die in the line of duty this year, so that force has been hit really hard. the president also said that he was following the investigation closely. he expressed gratitude to the police. and so he has spoken out in response and it says that the flag at the white house will be flown at half mast. nancy pelosi came of the house speaker, office of the flag at the capitol building would be flown at half mast as well. aha, the capitol building would be flown at half mast as well.— at half mast as well. a difficult time for the — at half mast as well. a difficult time for the capitol. _ at half mast as well. a difficult time for the capitol. barbara, l at half mast as well. a difficult i time for the capitol. barbara, as always, many thanks. a minneapolis homicide investigator has said police officer derek chauvin used "totally unnecessary" deadly force when kneeling on george floyd's neck during an arrest last may. he was giving evidence on day five of the trial of mr chauvin,

the white former officer accused of killing mr floyd. here's a bit of what lt richard zimmerman had to say responding to the prosecution. what is your view of that use of force during that time period? totally unnecessary. what do you mean? well, first of all, pulling him down to the ground face down and putting your knee on a neck for that amount of time is just uncalled for. i saw no reason why the officers felt they were in danger, if that's what they felt. and that's what they would have to feel to be able to use that kind of force. our correspondent lebo diseko is in minneapolis and has been watching the trial. today has been very much|

about the police response. lt zimmerman, one of- the longest—serving and most respected officers here - in minneapolis, telling the court that in his 35 years on this force in minneapolis, - he has never been trained l to kneel on someone's neck and that is because it. constitutes deadly force. also talking about the fact that| once somebody is in handcuffs, they no longer constitute the same level of threat. _ and really saying that as a police officer, i you have a duty of care to somebody once they are handcuffed, that - their safety is your responsibility. here in the uk, more than 70 mps, including 41 conservatives, have condemned the idea of vaccine passports for entry into public venues or workplaces in england. the policy, which would mean people showing a certificate confirming their covid status, has been described as "divisive" and "discriminatory".

the government says no final decision has yet been made. our political correspondent nick eardley has more. a small taste of freedom — many people have been making the most of being allowed to meet friends outdoors again, but when might life feel more normal, with busy pubs and restaurants, stadiums and theatres? it's one of the questions the government is considering, and whether proof you've had a vaccine or a negative test could reduce, maybe even remove, the need for social distancing. i think it's a good idea, but with all things, it needs testing. ijust don't... i don't know. i feel like it would create a division in society, personally. i would love to, because, well, i work in a pub. - so, will you need a certificate to get in here in the future? some sort of vaccine passport does look likely for international travel, but it's more controversial at home. a group of 70 mps,

including a former labour and conservative leader, have spoken out today, writing... i'm not convinced that vaccine passports for use within the uk is proportionate to the risk. it would be divisive, effectively creating an underclass of people who are not vaccinated, many of whom will not be vaccinated for medical reasons. the government is hoping to allow more people back into theatres, like this one in wolverhampton. this is not about a vaccine l passport, it is about looking at ways of proving that you're - covid—secure, whether you've had a test or had the vaccine. clearly no decisions have been made, because we have to weigh _ up different factors, - the ethical considerations and so on, but it may be a way-

of ensuring you can get more people back doing the things they love. there will be test events in the next few weeks, including at wembley for the fa cup. over the past year, we've gotten used to the government making massive decisions which have a big impact on individual freedoms. but as society slowly opens up again, we face another big question — is it fair to ask people to prove they've been vaccinated or had a negative test to pop into the pub or out for dinner? if they do happen, vaccine passports would be temporary, and they might not be used everywhere. some devolved governments are yet to be convinced they would be effective. there are also concerns about the practicalities. the additional burden of the vaccine passport could really, really scupper things. it could make us actually feel that we're discriminating against sections of the population that haven't been offered a vaccination or are unable to have one, like pregnant women. there will also be more detail next

week about a strategy for allowing holidays again, likely to involve a traffic light system based on how safe each country is. we've started getting some of our freedoms back, but there's a lot to consider in the coming weeks. nick eardley, bbc news. pakistan is among four countries which have been added to england's red list of places from where almost all travel is banned. from next friday, only british and irish nationals or uk residents will be allowed to return home from pakistan, bangladesh, the philippines and kenya. they'll have to self—isolate for ten days in a government—approved hotel. stay with us on bbc news. still to come, using music to help children born with autism overcome their speech disorders. we bring you a special report from ghana on world autism awareness day.

music. the accident that happened here was of the sort that can, at worst, produce a meltdown. in this case, the precautions worked, but they didn't work quite well enough to prevent some old fears about the safety features of these stations from resurfacing. old fears about the safety features the republic of ireland has become the first country in the world to ban smoking in the workplace. from today, anyone lighting up in offices, businesses, pubs and restaurants will face a heavy fine. the president was on his way out of the washington hilton hotel where he had been addressing a trade union conference. the small crowd outside included his assailant. it has become a symbol of paris. 100 years ago, many parisians wished it had never been built. _ the eiffel tower's birthday- is being marked by a re—enactment of the first ascent by gustave eiffei —

this is bbc news. the latest headlines — police guarding the capitol building in washington have shot and killed a man who drove his car into two police officers. one of the officers has also died. at the derek chauvin murder trial, the top minneapolis homicide investigator said that once a person was handcuffed, as george floyd was, the threat to an officer dropped. at least 50 people have been killed in a passenger train crash in taiwan. hundreds of others have been freed from the wreckage after being trapped for hours. our correspondent john sudworth reports. the train, travelling south from taiwan's capital and along the island's mountainous east coast, was packed with people ahead of what is a long holiday weekend here.

just as it was entering a tunnel, it's believed to have been derailed by a lorry that slipped onto the track from a nearby construction site. rescuers worked to free those trapped in carriages ripped apart by the impact. reports suggest that, with almost 500 people on board, many were standing and were tossed about by the impact. "the lorry slid off the road and crashed into the train," this worker says. "now all of the front carriages are damaged." some passengers were able to walk to safety. but the mangled wreckage blocking inside the tunnel meant others had to use the roof of the train to escape. ambulances ferried dozens of injured people to local hospitals. "i was thrown to the floor.

i hit my head, and it started bleeding," this woman says. "there was no space on the sides of the tunnel." "we had to climb onto the carriage roof to get out." taiwan's premier, su tseng—chang, visited the scene, while family members gathered to identify the dead. and the scale of the loss of life left a profound sense of shock on a national holiday meant to be a time that brings loved ones together. the president, tsai ing—wen, described it as heartbreaking. the islands state—owned railway network, while reliable and efficient, has suffered a small number of fatal accidents over the years. this is being described as the worst in decades. john sudworth, bbc news, taipei. let's get some of the day's other news. officials from tehran and washington will travel to vienna next week as part of efforts with other world powers to revive the 2015 iranian nuclear deal.

the us and iran are not expected to hold direct talks, but russia has said the talks are on the right track. the iran nuclear deal was scrapped by president trump's administration after he accused tehran of breaking the conditions. major oil—producing countries are increasing output in an attempt to stop fuel prices rising. the group opec plus said there had been improvements in the market because of global vaccination programmes and stimulus packages, but production will still remain well below pre—pandemic levels. the japanese scientist isamu akasaki, who won a nobel prize for developing energy efficient led lighting, has died at the age of 92. professor akasaki was jointly awarded the prize for physics in 2014 along with two other scientists. the nobeljury described their invention of the blue light—emitting diode as revolutionary.

the uk's medical regulator has said that out of 30 cases of rare blood clotting in people who've had the oxford astrazeneca jab, seven people have died. that's out of a total of 18 million administered doses. the mhra said a review was ongoing, but that no link to the vaccine had been proven. it stated that people should continue to get their vaccines when invited to do so because the benefits outweigh any risks. our science correspondent rebecca morelle explains more. these clots are unusual in that they're associated with low platelet levels, and platelts are a type of blood cell that normally cause bleeding, not clotting, and these clots can affect the brain, too. so, what needs to be unpicked is whether these are happening naturally or whether they're a really rare reaction to the astrazeneca jab. the incidence is low, so 30 cases out of 18 million jobs. so that's about one event in every 600,000 astrazeneca vaccines.

and the uk regulator said there have been two cases of brain blood clots with the pfizer vaccine, too, but these don't have the low platelet counts associated with them, so they're slightly different. but these clots have caused some countries to actually restrict who they give the vaccine to. so, today, the netherlands has announced that it's not going to be giving the astrazeneca jab to people under the age of 60. germany are doing the same thing, too, but the uk is continuing with its vaccine roll—out. and the uk regulator stresses, along with the european medicines agency and the world health organiztion, that the benefits of having a vaccination and the protection that they offer from coronavirus farm far outweigh any potential risk. so, their message is, if you are offered the vaccination, to go ahead and take up that offer. india's cricket legend sachin tendulkar has been hospitalised after testing positive to coronavirus earlier this week. the former captain wrote on twitter that he had decided to go

to a hospital in mumbai "as a matter of abundant precaution under medical advice", and he added that he was hoping to be back home in a few days. our correspondent rajini vaidyanathan sent us this update from delhi. sachin tendulkar tested positive for coronavirus at the end of last week and was isolating at home. but now we know that he has moved to hospital. in his statement to his fans on twitter, he said this was at out of an abundance of caution and that he hoped to be home in the next few days. so, no immediate cause for serious concern, nut given that sachin tendulkar is a megastar in this part of the world with hundreds of millions of fans, there are many many people who will be watching his condition very closely.

now, this all comes as india itself is seeing a huge spike in coronavirus cases. in the last 2a hours, more than 82,000 coronavirus cases reported and more than 430 deaths. now, that's the highest daily increase since the end of last year, since last october. at the start of the year, cases were falling quite dramatically here in india, and i think a lot of people thought that india was past the worst. officials say that lax behaviour is to blame for this rise in cases. perhaps people weren't wearing masks as often, not social distancing in some cases, and now what we are seeing is this rise in cases. now, yesterday, the government expanded its vaccination programme. now anyone over the age of 45 is eligible for a coronavirus vaccine. now, officials want to make sure that everyone over the age of 45 in these areas where there are high case numbers gets a vaccine in the next fortnight. now, that's still a tough challenge here. there's still a lot of scepticism around the vaccine here in india. now, the government's target

is to make sure that 300 million people get their first dose of a covid vaccine byjuly. but experts believe that unless the vaccination programme is ramped up quite dramatically, that could be quite a tough target to meet. as the world marks autism awareness day today, we bring you a special report from ghana, where a music therapist has been helping children born with the condition overcome their speech difficulties by teaching them to sing. the world health organization estimates that globally, one in every 160 children has an autism spectrum disorder. our reporter charles mgbolu was able to observe their fun sessions and brings us this report. she sings. at first glance, this looks like a simple music class. with this child as

the star performer. they sing. but there is something else going on. # we're winding down the road. # and i don't know what to do. meet this teacher. for seven years, she has been using music as a therapeutic tool to help children with difficulty with communication skills such as children born with autism. i feel the need to reach out because i believe music can make an impact in their lives. parents are highly frustrated, and the educational system here in ghana is not adequately resourced to help individuals with this challenge. veronica's son has been attending the sessions, and she says they've been beneficial. as parents, we go from hospital to doctor to doctor,

and that's what we were doing. we went to the emt and they say there was something wrong with the ears or something. we went... so we've been going up and down. and this when we saw this at the school, we decided to come and see how the music could help. the who estimates that globally, one in 160 children has an autism spectrum disorder. autism affects people in a variety of ways. some autistic people may live independently. some may require support in certain areas of their life. and others are full—time care. music therapy may not work on the more severe cases of autism. but she says these children are ambassadors. through them, she wants to bring hope to every child living with autism. i feel elated.

ifeel very happy, and it'sjust heart—warming to see when a child develops and moves on to another step. thankfully for these children, in this suite, music is possible in life now so much hope. charles mgbolu, bbc news, ghana. a reminder of our top story — a police officer has been killed in an attack near the us capitol building in washington after a man drove his car into two officers before getting out of the vehicle and lunging at them with a knife. the man was then shot by police. president biden said he was heartbroken over the death of the officer, william evans, who had served for 18 years. the second officer was wounded. police said the incident did not appear to be terrorist—related. the attacker has been named as 25—year—old noah greene, who was reportedly not known to police.

the president adding it had been a difficult time for the capital building. you can reach me on twitter. much more on the website. good evening. well, it's not been too bad a start to an easter holiday. don't take my word for it, however, take a look at this — not a cloud in the sky across western scotland throughout the afternoon. and in actualfact, it has been a different story, though, further east and eastern england. quite a lot of thick cloud and breeze coming in off the sea, so a coolish afternoon in suffolk, and you can see that quite clearly on the satellite picture. now, that breeze is going to continue to drag in some cloud off the north sea through this evening and overnight, so we will keep those temperatures above freezing, but where we've had the clear skies by day, that's going to allow those temperatures to fall away really quite sharply. so, we could see a frost first thing on saturday morning in sheltered rural areas. so, it's a chilly start, but it's

a sparkling start once again. lovely sunshine expected away from the north—west of the great glen across scotland, northern england, wales, northern ireland in particular. and if we start off with some cloud through the midlands and into the south east, hopefully that should thin and break a little into the afternoon. cool once again along the north sea with 8 or 9 degrees, but we could see highs of 16 in scotland with that sunshine. high pressure will then start to drift its way southwest into sunday, allowing this weather front to start to arrive, and that's going to throw more cloud ahead of that rain as it comes in, so a day of changed fortunes. cloudy and wet in scotland and northern ireland, more sunshine and more warmth across england and wales, particularly eastern england, where we've had that nuisance nagging cloud. as we move out of sunday into monday, though, as those weather fronts sink south, they really are going to open the gate for that colder arctic air we've been telling you about. it's going to push its way steadily

down on a brisk northerly wind. and really mean a marked contrast to the feel of the weather, unfortunately, for easter monday. so, easter monday is the really cool day. sunny spells and scattered showers, some of those showers turning wintry. hail, sleet and snow mixed in there as well. temperatures will struggle on the thermometer, and obviously, you've then got to add in the direction and at times the strength of that wind, so it's probably going to feel more like close to freezing. so, if you're going out for a brisk walk, you'll need a couple of extra layers. the cold theme continues into tuesday, slowly starting to get a little less cold on wednesday, but largely dry. take care.

this is bbc world news. our main headlines.

police guarding the us capitol building in washington have shot a man dead after he ran over two police officers, killing one of them. no motive for the man's actions has yet been given. the trial of former minneapolis police officer derek chauvin, accused of killing george floyd, has continued for a fifth day. a senior police officer who attended the scene said he had never been trained to kneel on someone's neck. more than 50 people are thought to have died when a high speed passenger train came off the rails in taiwan. eyewitnesses have suggested it hit a construction vehicle which had slipped into its path. the indian cricket star sachin tendulkar has been admitted to hospital, after suffering from coronavirus for more than a week. he tweeted that he had been admitted as a matter of precaution.