police say the stabbing to death of a man on a train in surrey was witnessed by his 14—year—old son. the attack happened on board a london—bound train during what's described as a vicious fight. traumatically, the victim's son would have been nearby when his father was fatally wounded. this would have been an horrific and hugely traumatic event to have witnessed, and we're providing him with as much support as possible. a manhunt is now under way after the killer fled from the train. also tonight: the uk national arrested in russia on suspicion of spying — the foreign secretary warns moscow against using him as a diplomatic pawn. new ways of smuggling drugs into prisons — including soaking clothes in illegal substances. donald trump meets congress leaders, but there's still deadlock over the government shutdown — he says he's prepared for it to last months. and tottenham crush tranmere rovers with a 6—0 victory in the fa cup third round. and coming up on sportsday and bbc

news, after all the football, we've got rugby union as saracens take on sale, hoping to go top of the table. good evening. police have this evening given details of the stabbing to death of a 51—year—old man on board a train in surrey. they said the killing happened in front of the man's 14—year—old son, and described it as "a horrific and hugely traumatic event to witness". the perpetrator is not thought to have been known to the victim. a search is now under way for the murder suspect — who's described as black and in his twenties or thirties. the police are asking the public to contact them with any information to help find him.

our correspondent richard galpin is at horsley station, where the train came to a stop. the police have been searching throughout the day for the man who carried out this horrific attack, but so far, there has been no arrests. although the police do now have the description of the potential suspect which has been provided by the local people here. forensics teams searching the carriage this afternoon in the wake of the mud on board the train heading from guildford to london. the victim, a 51—year—old man who died of multiple stab wounds in what an eyewitness described as a vicious fight. his body was finally removed from the scene at horsley station this evening. the victim boarded the train at around 1pm at london road station in guildford along with his

14—year—old son. traumatic look, the victim's son would have been nearby when his father was fatally wounded. this would have been an horrific and hugely traumatic event to have witnessed and we are providing him with as much support as possible. the suspect is a black man in his twenties to 30s. he is approximately six feet tall and of slim build, with a bid, believed to be dressed all in black, with white trainers. the train had left guildford at lunchtime, bound for waterloo station. the men boarded the train at the first stop, london road station, just after one o'clock. a few minutes later at london, the next stop on the line to waterloo, the murderer got off the train and fled. the train went on to horsley station, where ambulance crews found the victim dead. ever since then, the victim dead. ever since then, the police have been searching for the police have been searching for the man who carried out what seems to have been a frenzied attack. but

so to have been a frenzied attack. but so far to no avail. although they say there have been multiple sightings of a potential suspect. it's really shocking because around here, you don't hear things about that sort of situation happening. it isa that sort of situation happening. it is a quiet area. we are a close community around here. pretty much eve ryo ne community around here. pretty much everyone knows everyone. no big news happens, so i think something that tragic is going to shock a lot of people. tonight, the people of this area know there is a murderer on the loose following a highly unusual killing on a train in broad daylight. as you would expect, the police are calling on any eye witnesses to come forward as quickly as possible even if they don't think they have useful information. they said those that do come forward should contact the british transport police. richard galpin, thank you. there are renewed tensions between britain and russia after the arrest in moscow

of a joint us—uk national on suspicion of spying. paul whelan's family say he was simply attending a wedding. the foreign secretaryjeremy hunt has said moscow mustn't use british citizens as "pawns in diplomatic chess". here's our correspondent, sarah rainsford. paul whelan was with a wedding party staying at this top end moscow hotel, but he never made it to the ceremony. he was arrested, charged as a spy. russia's security service implied he'd been caught red—handed. as his family and friends insist he's innocent, the british government says it's extremely worried. individuals should not be used as pawns of diplomatic leverage and we need to see what these charges are against him, understand whether there is a case or not. we are giving every support that we can. so what do we know about paul whelan? he was a reserve in the us marines for 1h years and served two tours in iraq.

in 2008 he was discharged for bad conduct — theft, according to military records. but it was from iraq that he made his first trip to russia, in 2006. paul whelan has had a page on this russian social media site now for over a decade and he's got dozens of friends on here. and because this is a spy case, the ones i've contacted have been too nervous to go on camera to speak openly about him, but they have been messaging. and they described the man who they say is very interested in russia and is culture, not in its secrets. in fact, one man told me if paul whelan is a spy, then i'm michaeljackson. there are men on here who do have

military connections, but even those men have told me mr whelan never asked them anything suspicious. his twin brother says paul whelan had been showing wedding guests around the kremlin on the day of his arrest. it's very hard for me to understand how anyone would consider paul to be someone who would be a lawbreaker and take those sorts of risks, particularly in countries where they are less, maybe flexible, about lawbreaking. he's now in solitary confinement in this former kgb prison. there's still no official word what exactly he is accused of. instead, there is speculation this could be part of a bigger political game, one that now involves britain as well as russia and america. so might vladimir putin himself be involved 7 last month he condemned the detention of a russian woman in the united states. our diplomatic correspondent,

james robbins, is here. the foreign secretary pulling no punches at a time when britain's relations with russia are already severely strained? that's right, if anybody thought that shockingly bad relations with rusher after the salisbury poisoning last year might have bottomed out and there might be scope for improvement in the new year, the way in whichjeremy improvement in the new year, the way in which jeremy hunt jumped improvement in the new year, the way in whichjeremy huntjumped straight in and accused rusher in effective using paul whelan as a pawn puts paid to any suggestion that relations might improve. it is also interesting that with the accusation, he seems to lend weight to speculation in the united states that paul whelan has been arrested simply to be traded. what do we know about paul whelan? we know that he has three nationalities, nothing unusual in that. he is an american, his british and also a citizen of the irish republic. he spent most of his life in the united states. he served in the us marine corps and he served in the us marine corps and he served and fought in iraq. but we also know from the pentagon that he was discharged for bad conduct. he

has subsequently been the director of global security for a car parts applying company and he seems to have made frequent visits to rusher and built up a lot of contacts, but that doesn't make him a spy. his family insist he is wholly innocent. the other woman, maria, family insist he is wholly innocent. the otherwoman, maria, has family insist he is wholly innocent. the other woman, maria, has already pleaded guilty to acting as an undisclosed agent of a foreign power in the united states, apparently by seeking to influence the gun—control debate. she's a real alms enthusiast. so could it be that the kremlin, which clearly wants to get her home, is simply using this as a way achieve that? james, thank you. police say there's evidence that members of criminal gangs are deliberately getting jobs in prisons to bring in drugs. the warning comes after leeds prison introduced an x—ray body scanner to detect illegal substances. but prisoners are finding new ways for them to be smuggled in, including having their own clothes

soaked in drugs so they can cut the material up and smoke it. our home affairs correspondent, danny shaw, reports. stand up onto the two black marks. that's it. spin around and face me. just place one hand on to there. using x—ray technology to make prisons safer. this is a demonstration of the first body scanner to be installed as part of a government programme to reduce drugs and violence in ten of the worst affected prisons in england. nearly finished. it's used on prisoners if there's intelligence they've hidden a package inside them. this is an image of an inmate found with concealed drugs on the first day the device was deployed. you can see the straight edges, which shouldn't be in the human body. the scanner operates in a similar way to a standard hospital x—ray machine, but the level of radiation is 400 times lower. that is a photograph of a normal—sized felt tip pen. that is a mobile phone alongside it, which is about the size of your thumb. this phone was smuggled into the jail — prisoners use mobiles to order drugs.

there's no limit to the techniques they come up with to get drugs in. they've been soaking clothes in drugs, and then either smoking bits of cut—up clothing, or then using kettles, boiling the drugs out and impregnating them back into paper. the prison market for drugs is highly lucrative. 0ne inmate, locked up for armed robbery, told me what happens when prisoners get into debt, though he wasn't involved himself. lads are getting themselves into debt, can't pay their debt, they'll get beaten up for it. get yourself into drugs, you're buying drugs all the time, you can't pay, and the other lads can beat you up to show that if you don't pay, that's what's going to happen. leeds is one of ten prisons where the government has promised to reduce drug—related violence by this summer. assaults have been rising since 2014, and were projected to increase in eight of the jails last year, though the final figures have not yet been compiled.

a lot more availability, a lot more access to them. at the st george's crypt centre in leeds, i asked former prisoners if they thought the government's plans would work. if they want to solve the problem, they need to work with the social issues, the problems that are making people want to use substances in the first place. the government minister responsible has pledged to resign if there hasn't been a reduction in drug—fuelled assaults in the ten prisons by this summer. he's concerned about evidence that the organised criminals behind the drugs trade are deliberately getting jobs in prisons to bring contra band in themselves. it can happen, and the answer to that is searching, searching notjust in terms of finding a bad apple, but also that if you have very good search procedures in place, it's much more difficult for a prisoner to put pressure on a prison officer. at leeds, they've blocked off windows to stop drugs getting in.

packages were dropped by drones or thrown over walls. the new scanner will help, too, but there's a long way to go. danny shaw, bbc news, at hmp leeds. president trump says he is prepared for the partial shutdown of the us government — which is now entering its third week — to last years. he was speaking after meeting congressional leaders in the white house. mr trump has said he'll reject any new budget that doesn't provide funding for his proposed us—mexico border wall. but the democrats, who took control of the house of representatives yesterday, seem in no mood to provide the money. 0ur north america correspondent aleem maqbool is at the white house. yes, the story of this week really here in washington is the ushering end of new potentially much stormy times and that's because donald trump, for the first time in his presidency, now has a political opposition with real teeth, with the

democrats taking that majority and control of the house of representatives, so watch out for real headaches for the president in the weeks and months to come. but that all happens as you rightly say as we hit day 1a of the government shutdown that shows no signs of coming to an end. looking in, it might appear to be business as usual at the white house, but it's far from it. for two weeks, government has been shut down. the democrats won't agree to sign off on $5.6 billion for a wall along the border with mexico, and donald trump is refusing to back down on his demand that they do just that. the southern border is a dangerous, horrible disaster. we've done a greatjob, but you can't really do the kind ofjob we have to do unless you have a major powerful barrier and that's what we're going to have to have. while there's no agreement, 800,000 government workers are not getting paid and many government departments and services have been suspended.

0pposition leaders met donald trump today, to try to resolve the crisis, but said they found a man who was uncompromising. so we told the president we needed the government open. he resisted. in fact, he said he'd keep the government closed for a very long period of time — months, or even years. but democrats themselves are not yielding. they've been emboldened after the swearing in this week of new congressmen and women that now give them the majority in the house of representatives. among the freshman politicians who will be a thorn in the president's side was one of the first muslim congresswomen, rashida tlaib — always seen as someone representing a more combative, brash opposition. but few expected she'd steal the headlines as she did, talking about the president at a washington reception. because we're going to go in there, we're going to impeach bleep. those comments provoked donald trump. using language like that,

i thought that was a great dishonour to her and to herfamily. but what of that question of impeachment? well, you can't impeach somebody that's doing a greatjob, that's the way i view it. thank you very much. there's no question this week though and a resurgent democratic party has ushered in a new, more turbulent and divisive time here. aleem maqbool, bbc news, in washington. theresa may had a reportedly "friendly" phone call with the president of the european commission this afternoon on her brexit plans. it came as she prepares to try to persuade mps to back her withdrawal deal later this month. the democratic unionist party, which has an agreement to support the government, has repeated its opposition to her proposals, saying there's "not any way" it can back them. let's talk now to our political correspondent, chris mason. mps are back in the commons next week. has anything changed over the winter break? if you needed any further proof that

the fun is cancelled, that christmas is over, the kids are going back to school, well, the pause button on the brexit chat on the news is being lifted off. we are going to get a resumption of a rather noisy conversation and as things stand that conversation is rather familiar. why? to answer your question, because very little seems to have changed. so northern ireland's democratic unionist party, who products the prime minister in government, before christmas they didn't like her eu withdrawal agreement. guess what, they still don't like it now, and neither do a shed load of conservative mps. they still have real concerns about this so—called backstop, this insurance policy to ensure that the border between northern ireland and the republican stays open under any circumstances. so here's a sense of the timeline, mps will return here on monday, they'll be discussing and debating the riff from agreement by the middle of the week and we expect

the middle of the week and we expect the votes to take place a week on tuesday but as things stand it looks like the prime minister will lose. 0ne like the prime minister will lose. one final thought. 12 weeks tonight we'll be just 45 minutes away as things stand from the uk leaving the european union. chris mason, many thanks. new guidance on children's use of screens recommends that parents set time limits and a ban an hour before bedtime. but it says there's little evidence that using devices is in itself harmful. the report by the royal college of paediatrics and child health says parents should worry less about screen time — but it has drawn up a checklist to help them judge if their children are using screens in a healthy way. here's our medical correspondent, fergus walsh. how much screen time via smartphones, computers or tv is ok for kids? these children from beckenham in south london have strict limits set by their mum, including no screens before bedtime. i think that's really fine because i play on it. i always play on it, really.

i have a computer upstairs and that's where i do a lot of my homework on. but, like, in my free time when i'm not doing, like, homework and training it's calm tojust chill out on my phone. if i think back to when i was younger, i think the thing for us was tv. you know, we were on tv too much, we watched tv. what was it going to do to us? i think it'sjust a new medium. i think tablets is a new medium, it's a new generation and this is how they spend their time. i don't think it's bad. nothing is bad in moderation. today's guidance says as long as children are active and healthy then parents are best placed to decide what screen use is appropriate and there's no need for set time limits. there's not good enough evidence for a particular threshold and it's really difficult to pick a number here. the second is actually applying a threshold is very difficult. what about homework? what about educational things? what about piano practice with your music on an ipad? it's very difficult to actually put these things in practice. and often what happens is itjust

makes people feel bad about what are quite normal activities. many studies have shown an association between high screen use and obesity and depression. but the royal college says there's simply not enough evidence to show a direct causal link. it might be that children with those issues are more likely to use screens excessively. in its guidance, the royal college recommends families ask themselves four questions. is screen time in your household controlled? does it interfere with what your family wants to do? does it interfere with sleep? and are you able to control snacking during screen time? the child health experts say there is a need for better research, especially on the effects of social media. so this guidance could change in years to come. one thing they are sure of is that children should not use screens in the hour before bedtime, because the light can slow the release of the sleep—inducing hormone melatonin.

tropical storm pabuk has lashed southern thailand with wind and rain, in what is expected to be the worst storm to hit the region in 30 years. storm pabuk made landfall in the early hours of friday morning, sending trees crashing into houses. thousands of people left the popular tourist spots of koh samui, koh tao and koh phangan islands before the storm hit. some british tourists in thailand have complained about a lack of information from the authorities. in india, police say a third woman has defied traditionalists and entered a hindu temple in the southern state of kerala, after two others set foot inside on wednesday. the sabarimala shrine has become the focus of a prolonged showdown, after india's supreme court overturned a ban in september on women of menstruating age entering the temple. the issue has triggered violent clashes in the state. yogita limaye reports from mumbai. earlier this week, these

women made history. escorted by policemen in plain clothes, they were the first to enter the sabarimala temple since the supreme court allowed in september last year. now they've been kept in a safe house by the government because their lives are under threat. bindu ammini explains why she entered the temple. the things that happened in sabarimala are a violation of equality, and i like to establish order and implement judgement given by the supreme court. the implementation of this judgement also helps to implement gender justice in our society. their entry prompted fierce protests around the state of kerala. violent clashes broke out, and one person was killed. demonstrations were also held in the national capital, delhi. a black day, yesterday.

we never expected the government could do like this. the temple is devoted to a hindu god believed to be celibate. and so for decades, women between the ages of ten to 50, considered impure because they menstruate, were not allowed inside. the issue has become politically contentious in the run—up to a national election later this year. the ruling bjp party, as well as the opposition congress, have both opposed the entry of women in the temple. kerala's local government has supported the court's verdict. on tuesday, they organised this human chain for gender equality, hundreds of kilometres long. translation: it's the state government's responsibility to give protection to women. and the government has fulfilled this constitutional responsibility. on thursday, a third woman entered the shrine, and it's believed that more planning

to do so. yogita limaye, bbc news, mumbai. a couple from county down who've won a £115 million euromillions jackpot, say they plan to share the money with friends and family. frances and patrick connolly say they've written a list of 50 people they want to help. it is the fourth biggest uk euromillions win and the biggest in northern ireland. football, and tottenham hotspur cruised to a 7—0 victory over the league two side tranmere rovers in the fa cup third round. it's spurs' biggest ever competitive win playing away from home. 0ur correspondent natalie pirks was watching. friday night lights at prenton park, league two tranmere's fans were up for this one. the big boys were in town, spurs may be title contenders but they haven't won the fa cup for 28 years but one mistake was all that spurs needed to pounce.

scores. there would be no giant—killing, in fact it was about to get a whole lot worse for tranmere. three goals in nine minutes saw spurs go 4—0 up, heung—min son in irresistible form. their six was also fernando llorente's hat—trick. how many is this going to be at the end of the night? there was only one thing for spurs to do, of course, bring on harry kane. talk about adding insult to injury. 7a league places separated the sides, seven goals showed a chasm in class on a night where spurs turned on the style. natalie pirks, bbc news. that's it from us. hello, and welcome to sportsday.

i'm lizzie greenwood—hughes, here's what's coming up on tonight's show. there's no fa cup giant—killing at prenton park, as spurs thrash tranmere in the opening game of the third round. sale beat saracens, but they can't stop them from going top of the premiership table. and laying down her oars, as 0lympic gold medallist katherine copeland announces she's retiring. hello there, 0k, we're starting with football. it's the opening weekend of the fa cup 3rd round, this is when the big boysjoin in, over the next few days all the premier league clubs are in action, all but one against lower league opposition. but there was no giant killing in the opening match between league

two's tranmere rovers and tottenham. spurs ruthlessly hammered tranmere 7—0 at prenton park. 0ur football reporter ben croucher has been watching the match. ben, spurs looked lethal from the off, and there was a great moment afterwards when maurcio pocchetino discovered it's spurs' biggest competitive away win. in their entire history yes i suppose it's the biggest away went to the think 1882 when the club was formed. if you are tranmere you want you to your team to win the big giant game we want to watch the big premier league side hammer you and sees a really nice football. you wa nt to sees a really nice football. you want to see some cabal you want to see week in and week out. spurs had a really shunting before this. based

on the light of delhi alley but it was another one of those changes. —— that the opening goal, slight deflection on it, no va arts and then check it —— the va var. harry came's understudy scored his first of the evening. some human —— song got the fourth of the evening and by 110w got the fourth of the evening and by now tranmere got the fourth of the evening and by 110w tranmere were got the fourth of the evening and by now tranmere were trying to hold on for dear night. —— dear life. back in february he scored a hat trick against another team in the fa cup. and thenjust when against another team in the fa cup. and then just when you thought life could not get any worse, the spurs decided to bring on harry came in the game was out of control by that

time. tranmere i think will be disappointed that they didn't perform better on the night, but spurs were truly ruthless as you saw when harry kane came off the bench. the measure said that they did it for the home fans. —— manager said they did it... it was good to have the opposing tea m it was good to have the opposing team see other players, and in england it's difficult to have the opportunity to see teams like that. we wa nted opportunity to see teams like that. we wanted to give him quality minutes and arrived in the best condition again on tuesday and chelsea but, and to the people that we re chelsea but, and to the people that were here. how kind of them to show the tranmere fans harry kane. he is already an inlet legend, but he had about 15 minutes on the pitch. you

could kind of seat when the manager was getting on there because he did not play a loaded the second string. he did not pick the likes of deli ale who have been terrific for him this season. and if you are a tranmere fanned a dig at the plate for the premiere of the title, you can see the difference is that i think it was quite nice, especially ona think it was quite nice, especially on a cold night for the —— and if you are a tranmere fanned, you don't often you are a tranmere fanned, you don't ofte n get you are a tranmere fanned, you don't often get to see wires from the premier league. —— see players from the premier league. well no cup upset in the opening tie, but can you see any potential slip ups tomorrow? there are lots of premier league clu bs there are lots of premier league clubs playing against