this is bbc news, i'm martine croxall. the headlines at 8pm: sri lankan security forces have detained the wife and child of the man believed to be the mastermind behind the wave of bomb attacks on easter sunday. the home office is being investigated after they revoked the visas of 30,000 foreign students over claims they cheated in an english language exam. the labour party is to change its european election manifesto leaflets, saying it may support another referendum on any brexit deal. we would prefer to have a general election, but failing that, if we get that agreement, we're prepared to consider to put it to a confirmatory vote. but that is a decision the national executives of the party will make on tuesday. cosmetic clinics offering "quick fixes" with treatments such as botox are accused of fuelling a mental health epidemic. and investigating the toxic waters in the southern iraqi city of basra which caused ten of thousands of people

to fall ill last summer. that's in half an hour on bbc news. good evening. sri lanka's security forces have detained the wife and child of the man believed to be the ringleader behind the wave of bomb attacks on easter sunday. they were captured following a gun battle with suspected islamist militants in which 15 people were killed, including six children. a huge search is continuing for the bombers. from sri lanka our correspondent yogita limaye reports. the search continues for those behind sri lanka's horror. police have been carrying out raids across the country. on friday, they followed a tip—off to this house, in the eastern

city of sainthamaruthu. armed men were inside, who set off an explosion. a gun battle followed and the house burned down. more than a dozen died. women and children were caught up in the violence. the wife and child of this man, zahran hashim, the alleged mastermind of the bombings, are believed to be amongst them. in another raid in the same area, police found a huge stash of bomb—making material. a discovery that reveals how grave the threat of more attacks still is. this banner of the islamic state group, which has claimed responsibility for the easter sunday attacks, was also found. several suspects are still at large. these photos were put out by the government earlier this week. newly released closed—circuit tv footage shows the bomber at kingsbury hotel, in colombo, the night before the attack.

backpack full of explosives, he checks in at the front desk, then goes off to his room. in the morning, he's seen leaving the elevator on his way to the hotel's breakfast restaurant. moments later, he detonates his bomb. perhaps the most inhuman of the bombings was at this church in batticaloa, because children were the target — young boys and girls who were attending sunday school. the bbc‘s tamil service spoke to a pastor, who recalls seeing the bomber. translation: he was wearing a shoulder bag and a camera bag. i wasn't aware of his purpose at that time. many children were drinking water in the entrance of the church after their sunday school class. people and children were entering, that's when the bomb went off. workers have begun to clear the trail of destruction and most of those who died have been laid

to rest, but fear remains. yogita limaye has also given us this update about the police curfew in place across the country. tonight it is the seventh night of curfew in sri lanka. tomorrow is a week since the bombings, a sunday, but all church services have been cancelled. people have been asked to stay—at—home and pray with their families. so i would say there is a real sense of fear here. it's not a city and locked down in the daytime — you do see people out and cards that i heard cars in the road. but it is far fewer than what would normally be. yesterday, video was released from a safe house in the east of the country showing a huge stash of explosives. also a gun battle in which several people were killed. i think there's a sense of disbelief here as well, that such a large network of people was operating and able to accumulate all of this material. and the intelligence and security services didn't know about it or did not act about it.

the search continues for those behind sri lanka's horror. as we've been hearing, 15 people including six children were killed in eastern sri lanka yesterday, when suspected islamist militants blew themselves up after troops attempted to raid a house. the bbc‘s anbarasan eti—rajan has been to the site. you can see the signs of clashes and the damaged hair. the steel gate has been damaged, broken windows and what the police were saying it is after the three militants were killed in the shoot out and the remaining people inside detonated their suicide vests killing the rest of the members who were staying in this house. that damage the entire building. we find another van here and the police believed this band belonged to of this house and they suspecting that this could be

containing some explosive devices and they say that they didn't find any device but this van was also damaged in the fighting. 2a hours after the fighting, most of the neighbours have led away, fearing for their safety, and that is why there is an eerie silence in the street except for a few policemen who are guarding the site at the moment. the whole town is deserted and empty. we also see some bloodstains on the floor here, suggesting that some injured person was brought from inside the house to this place. police here say that they rescued two people, a woman and a child, they were rescued, they we re a child, they were rescued, they were both injured in this operation, and they believe that they were the wife and daughter of one of the masterminds of sunday's bombing last week. and they think that they made a big breakthrough in this case because the militants who were

staying in this house, they were planning further attacks and that is why police believe that they have made a big breakthrough and they say that operations like this will continue until they find the remaining sympathisers of the radical islamist group. and we'll find out how this story — and many others — are covered in tomorrow's front pages at 10:30pm and 11:30pm this evening in the papers. our guests joining me tonight are the broadcasterjohn stapleton and benedict paviot of france 24. an investigation has begun into whether the home 0ffice acted fairly when it accused more than 30,000 foreign students of cheating in the english language tests required to obtain their visas. hundreds were detained and more than 1,000 were removed from the uk. clear evidence of cheating was uncovered by the bbc‘s panorama programme in 2014 but there are claims the government went on to wrongly accuse many people. kathryn stanczyszyn reports. an instructor reads out the answers. the students dutifully write them down. in 2014, panorama found clear evidence of this kind of cheating at two centres where foreign

students sit english language tests. it's one of the assessments they need to pass in order to obtain a visa to study in the uk. the then—home secretary theresa may said it would be urgently looked into. we have done a lot over the last three and a half years. we have rooted out abuse, the number of student visas has gone down and the amount of abuse has gone down, but it is clear people are finding other ways around the system. following the panorama investigation, the home office or dig checks are more than 58,000 oral tests ta ken between 2011—2014. it concluded that 34,000 people had cheated and said other results were questionable. the government cancelled 36,000 student visas and more than 1,000 people removed from the uk. fatima was one of those told her visait would be revoked, but denies doing anything wrong. she's not allowed to work, but not allowed to leave the country either. my life is actually

damaged, it is broken now. whatever i am doing is just staying in the home and counting my time, hoping that one day, everything will be sorted. and i will live my life again. at the time, the conservative government made very public its aim to reduce immigration numbers, something critics claim may have played a part. those students were not even treated like criminals — criminals would have a better chance to defend themselves because you would have to present them with evidence. this is directly linked with this effort to attempt to reduce the numberof migrants, and those students were caught in this. the national audit office says it will now review the government's response to fraud in the student visa system. the home office says it is already cooperating and continues to welcome genuine international students. labour's leaderjeremy corbyn has this evening given his reaction to a letter

signed by around 100 labourmps and meps which demands the party commits to holding another referendum on any brexit deal. in response to the letter, whose signaturies include a number of shadow ministers, jeremy corbyn said it was not for him to decide but for the labour party as a whole. the national executive will decide on tuesday what will be in the european election manifesto, and we will reflect the decisions made in last year's labour party conference, which were for a customs union, market access, and rights protection with the european union. and we would prefer to have a general election, but failing that, if we get that agreement, we are prepared to consider putting it to a confirmatory vote. but that is a decision the party will make on tuesday. but will there be a promise of a confirmatory vote? we'll let you know on the tuesday after that, because it is important that the party, which is a democratic party structure, makes those decisions. sadly — or perhaps it's a good thing — i'm not a dictator of the labour party. labour's ruling national executive

will meet on tuesday to finalise the party's manifesto for the european elections which are due to take place in less than four weeks' time, as our political correspondent susana mendonca explained. we've got a number of mps — around 100 mps and meps on the labour side saying that they want the party to offer a clear commitment that it is committed to having a vote on a brexit deal, and that they want that to be part of the manifesto, ahead of the european elections, which are due to be held on 23 may, provided that we do have european elections, because we know the prime minster hopes that if she can get a deal done before then, it might not happen. in their view, that would make them the only viable alternative to the brexit party. now labour have a real challenge here. within the labour party, there's a lot of controversy over whether they should be going for that clear message on the referendum, or whether they can actually deter labour voters, for people who perhaps voted for brexit in the referendum in 2016. so there are those who think labour

should not be going down that road. just to clarify, it is not a given that we will be taking part clinics offering cosmetic surgery such as botox and fillers have said they'll introduce new checks to ensure vulnerable people are not sold unnecessary or damaging treatment. it follows a warning from the nhs director of mental health services that the cosmetic industry is doing too little to stop those with body image obsessions, undergoing potentially harmful treatments. richard galpin reports. cosmetic procedures like botox injections and fillers are popular and easily available. notjust in clinics, but also in high street outlets. the nhs is concerned there's a link between young people's mental health and these kinds of procedures. 25% of youngsters are worried about their appearance, 50% are worried about their weight, and we know that the evidence is if you've got those concerns, if you are feeling pressure or bombarded around idealised body

image, that you are more likely to seek procedures, but you are also then more likely to be dissatisfied with the outcome of those procedures. to try to tackle this, the nhs wants all those providing cosmetic procedures to sign up to an online training programme teaching them how to recognise the signs and symptoms of vulnerability and mental ill health, and ensuring they tell customers where to get help if they show signs of being vulnerable. but the course is voluntary and, so far, only 10% of providers have signed up for the training. richard galpin, bbc news. health officials in pakistan say they've suspended a nationwide anti—polio campaign, after a series of deadly attacks on health workers trying to vaccinate children last week. a health worker and two security officers were killed in separate incidents. thousands of parents have refused

to allow their children to be given the vaccine. officials are blaming mis—information being spread on social media. cyclone kenneth has become the second powerful storm to hit mozambique in two months. rescue teams are attempting to reach remote villages in the north of the country where thousands of people may be trapped. the united nations says some villages have been completely flattened. the storm first hit the comoros islands, killing three people. it then made landfall on thursday in the cabo delgado region near the tanzanian border. heavy rain has increased the risk of flooding and landslides. 0ur correspondent pumza fihlani is watching from the capital, maputo. it's the worst storm this part of mozambique has seen. the people here were unprepared. days after cyclone kenneth hit, many are still shocked at the force of mother nature. heavy wind of up to 200 kilometres

ripped through northern mozambique, destroying homes and uprooting trees. the people of mozambique had barely recovered from another cyclone, which hit the port town of beira just over a month ago, causing death and destruction. the authorities this time around want to move faster. they're desperate to get their hands on resources which will make it possible for them to get help to where it's needed most. the operation is dependent on how nimble they are on the ground. torrential rains are expected here over the next few days. this means there's a high risk of flooding and landslides. there are fears thousands of people could be left trapped in remote villages. there are nearly 20,000 people in displacement centres — these are schools and churches that survived the impact. but as a clearer picture emerges of the destruction, more may be needed, local authorities have said. the worst—hit areas include pemba.

teams have been deployed to the area. officials say this will determine where help is needed most. 0ne death has been confirmed, but there are fears that figure will rise over the next few days. but for some, life now has become a search for the next meal. they are relying on aid efforts. it's a desperate time for survivors. rebuilding their lives will be slow and daunting for many people of this poor country. pumza fihlani, bbc news, maputo. the headlines on bbc news: sri lankan security forces have detained the wife and child of the man believed to be the mastermind behind the wave of bomb attacks on easter sunday. the home office is being investigated after they revoked the visas of 30,000 foreign students over claims they cheated in an english language exam. the labour party is to change its european election manifesto leaflets, saying it may support another

referendum on any brexit deal. sport and for a full roundup, from the bbc sport centre, here's gavin. authorities in cyprus are continuing to search two lakes for victims ca rd iff's cardiff's premier league status... brighton claimed a crucial point after coming from behind. brighton equalised at 15 minutes. there was a huge goal. i can't fault any of the lads effort. the one guy on the pitch who

scores a goal like that, he is probably the one with the most money. we have had five or six great chances, really, and we can't finish one of them so we probably won't score. let's take a quick look at the rest of today's results. spurs lost their first game at their new stadium, losing 1—0 against west ham. wolves got their revenge on watford after that fa cup semifinal defeat. they beat them 2—1 to go four points clear of watford. elsehwere, everton were held to a goalless draw by crystal palace at selhurst park. it looks like norwich are on their way to confirming their promotion to the premier league. they are currently leading blackburn 2—0 at ewood park. theyjust need a point to confirm they will be in the top flight next season. it also looks like sheffield united will bejoining them. they are all but promoted after they beat bottom side ipswich 2—0 thanks to goals from scott hogan and jack 0'connell. mathematically, leeds can still catch them, but united have far better goal difference.

if they fail to beat aston villa tomorrow, the blades will be promoted. celtic are just point a point away from retaining the scottish premiership, their 8th in succession after a one nil win over kilmarnock — on an emotional day at celtic park. in the week of billy mcneill‘s passing, members of the famous lisbon lions team, who won the european cup in 1967 were present for a special tribute to theirformer captain before the game. and, rather poignantly, it was their current number 5 — jozo simunovic — who scored the winner, with ironically, 67 minutes on the clock. elsewhere, aaron mcgowan‘s last minute penalty secured a 3—3 draw for hamilton against livingston. they go tenth, above st mirren, who drew 1—1 with stjohnstone. motherwell edged out the league's bottom side dundee 4—3, thanks to a stoppage time winner from david turnbull.

mercedes capitalised on more mistakes from ferrari to lock out the front row for today's azerbaijan grand prix. ferrari's charles leclerc was the fastest driver until this crash in qualifying left him in tenth place. valtteri bottas then pipped teammate lewis hamilton to pole position. sebastian vettel, in the other ferrari, will start third. in the pro 14, dragons dented scarlets champions cup ambitions for next season, with a 34—32 victory onjudgment day in a nine—try thriller. scarlets have qualified for europe's top tier every season since the inception of regional rugby in 2003, and it was level pegging after this try from matthew screech made it 32 points all in the 79th minute. but then the pressure was on dragons fly half jason tovey to kick this conversion, which he did to seal victory by two points. benetton have secured a playoff place after beating fellow italians zebre 25—11. edinburgh were in the running — they're playing glasgow, who can finish top of conference

a with a win and with a home draw in the play—off semifinals. glasgow lead 17—3. —— they currently lead 20—3. saracens have won the premier 15s final after a comfortable victory over harlequins. saracens came storming out of the blocks scoring five tries in the first half, including two from zoe harrison to lead 27—0 at the break. quins did mount a second half comeback to only trail by 13 points, but sarries held on. 33—17 the final score. there's been a big shock at the world snooker championship, where the three—time champion mark selby has been beaten by qualifier gary wilson in the second round. wilson, who is a former taxi driver, won by 13 frames to ten in sheffield, this break of 92 sealing the win in style. it's the second time the qualifier has knocked out a seed in this tournament after victory over belgium's luca brecel in the first round. he'll meet either ali carter or china'sjo yoo long

in the quarterfinal. ijust i just felt a little bit edgy out there and probably because of the season there and probably because of the season i have had, i have not been getting the result and lacked a bit of confidence. it could be down to that but i don't know, i thought if you get the first round out of the way, you can kick on but gary played well and deserved to win. ronnie 0'sullivan‘s conquererjames cahill‘s fairtyale run is over. the amateur lost out to scotland's stephen maguire in a dramatic deciding frame in their second round match. 13—12 the final score. cahill will be a professional next season though after gaining a two year tour card. most people would take it easy after breaking their collarbone, butjockey bryony frost isn't like most people and she proved it today, when winning the 0aksey chase at sandown on 15—8 favourite black corton. it was her first race since suffering the inury at the cheltenham festival last month. it completed a stellar day for frost, as she was crowned

champion conditional jockey on the final day of the national hunt season. that's all the sport for now. authorities in cyprus are continuing to search two lakes for victims of a man who's thought to be the country's first serial killer. it follows the confession of a greek cypriot army officer to the murder of seven women and girls. vigils have been held in memory of the victims, as isabella allen reports. forensic investigators use robotic cameras to search a toxic lake south of nicosia. they are searching for bodies after a man confessed to killing seven women and girls. translation: the robotic camera has identified two objects which we suspect may be those we've been looking for. tomorrow morning, we'll begin the process of retrieving them so that we can inspect and identify them. yesterday, a vigil was held for the victims of what's said to be

cyprus's first serial killing. there's widespread shock, but also outrage from demonstrators who accused the police of not taking the cases of the missing women seriously because of their foreign dissent. the main suspect, whose name has not yet been made public, has appeared in court and remains in police detention. cypriot authorities have called in additional help from british investigative experts in this unprecedented case. isabella allen, bbc news. spaniards go the polls tomorrow in a fiercely—contested general election — the third in the past four years. the controversial far—right vox party is threatening to shake up spanish politics but critics say its divisive message could set the country back decades. andy beatt reports. spain's third general election in just four years. with as many as 40% of voters still undecided ahead of sunday's vote,

politicians of all colours have been campaigning hard. among them, the far—right populist party vox, enjoying a surge of support and hoping to upstage their rivals. but in madrid, activists from feminist group femen, written across their bodies, "this isn't patriotism, "it's fascism." and the anti—franco slogan, "they shall not pass." anti—immigration, anti—separatist, and anti—women's rights, vox is one of five parties with a chance of entering government. if it does, it would become the first far—right group to sit in parliament for nearly 40 years. its leader, though, is keen to brush aside links with spain's fascist past. translation: vox is the only party capable of defending national unity and the freedoms for spaniards, that are under attack

from socialism, communism, and separatism. the party's rise, dubbed an earthquake in spanish politics, has clearly shaken the country's socialist prime minister. translation: i ask you all to unite around the only party that can guarantee spain looks to the future and doesn't go back 40 years, as the right would have it. political tremors have also unsettled the centre—right. led by the main opposition people's party. they‘ re likely to lose votes to vox, or end up depending on them to hold power. after the convulsions of the campaign, saturday has been set aside as a day of reflection. but with results expected to be close and followed by lengthy coalition talks, the calm is not

likely to last. andy beatt, bbc news. it's being claimed that some fitness trackers from leading brands are so inaccurate, they can be out by up to 11 miles when logging the distance of a marathon. the consumer group which? has published analysis of some of the most popular devices from big names in the market. the watchdog used a calibrated treadmill to compare different trackers logging the number of steps and distance travelled. it's warning some simply can't be relied upon. in the uk, around half a million people have a debilitating form of heart failure that doctors know very little about. the condition stops the heart from relaxing, meaning the muscles become too stiff to function properly. now researchers at four british universities are looking into how to diagnose and treat the condition. here's our science correspondent richard westcott. around 500,000 people have a type of heart failure we know very little about. it's called hfpef. ..

if you're ready, we can stop there. and this is a new study to find out what makes it tick. i didn't realise i had a heart condition and i thought, why, i'm so fit? i can't be — i've been a dancer, done so much, gardening, et cetera, i can't believe it. so you are quite good at walking on the flat, but not the inclines? definitely. as well as the physical tests, they will be asking patients about their lives. if i said, could you walk to the shop and back again? no, i couldn't. this is a very interesting patient group that are pretty much left to their own devices, there are not any evidence—based treatment therapies for them, so it's really interesting to try to find out what would help them. it wasn't long ago that some clinicians doubted hfpef even existed. it might be common, but it's hard to recognise. symptoms can be similar to more well—known types of heart failure, or even other conditions, but there is a key difference.

a normal heart muscle needs to be able to expand and contract so it can pump the blood. around half the people with heart failure have a muscle that's too loose, but they know how to diagnose that and treat it. the other half have a muscle that's gone thick and goes too tight, and that's the one they need to find out a lot more about. this is one of the more obvious signs we sometimes see. this blue jet you see here is blood leaking back because this valve should be closing, but it's not, and that can occur because the heart muscle has become thickened. we know that there are things that we can do for this group of patients and it's just ensuring that there's a systematic way of diagnosing and managing, that people are more aware of it, and that they know, right, if we get the blood pressure controlled, if we control their diabetes, if perhaps we make sure that they're doing more physical activity, that we can actually improve them. researchers will study around 200 patients for a year. well, i hope they find the reason

why we go downhill like we are. and i'm quite pleased, actually, that i had that call from faye last year, when she asked me would i come and participate in research? because it must help the future. they will then recommend new ways to identify and look after the hundreds of thousands who suffer. richard westcott, bbc news. 20 critically endangered ‘royal turtles' have been released into a remote stretch of a cambodian river, with chants from buddhist monks and ceremonial flowers to send them on their way. royal turtles were feared wiped out by 2001 through poaching for their meat, and sand mining which destroyed their egg—laying ground, before nests were found and a conservation plan began. now it's time for a look at the weather with ben rich. some very wet and windy weather in