this is bbc news. i'm shaun ley. the headlines at 9 pm. ukip's only mp douglas carswell quits the party to sit in parliament as an independent, saying he's achieved his main objective with the party. we can be absolutely certain that brexit is in good hands, we are going to leave, and all of the things for are going to come to pass. ukip leader paul nuttall says carswell‘s resignation isn't a surprise. tributes to the police officer killed in the westminster terror attack. the investigation into khalid massood continues. one man remains in custody. the us is investigating coalition air strikes the us is investigating coalition airstrikes in the us is investigating coalition air strikes in mosul, killing dozens of civilians. and in ten minutes, a debate on the state of british sport. the uk independence party's

only mp douglas carswell has announced he's leaving the party. he said he decided to leave because the party had achieved its goal of pulling britain out of the european union, adding that he was going on "amicable terms". he will now represent clacton as an independent mp, but there are calls for him to face a by—election. our political correspondent alex forsyth reports. shall we shake hands? i don't think we need to! voiceover: there's been no love lost between douglas carswell and some in ukip for some time. when he joined the party two years ago, it was a big deal. i am today leaving the conservative party and joining ukip. but the relationship with the then leader soon soured. differences in policies and personalities. and today he quit ukip, saying its job was done when the country backed brexit. if other people want to carry it on, i wish them all the best.

but you were the party's only mp, by quitting have not put the final nail in the coffin? theresa may means brexit is in safe hands. no tears from nigel farage, the former party leader saying that douglas carswell had jumped before he was pushed and was never truly ukip. current leaders agree. it really won't make very much difference to us, other than drawing a line under something that has really caused nothing but heartache for about a year, more than a year. douglas was never that comfortable in the party, so i think really he will go on his merry way. douglas carswell is duly elected as a member of parliament for the said constituency. thank you. last time he changed allegiances, the clacton mp made a big play of asking voters for approval, but not this time.

if i were switching parties, if i were going from ukip to the conservatives, then absolutely i would feel honour—bound to call a by—election. but the voters voted for a ukip mp and now they're getting an independent. when i was a conservative and switched to ukip, i was the first member of parliament for 26 years to insist on a by—election. but i'm not changing parties, i'm not switching sides. so what do people think of his decision in his constituency? bit of a disgrace, he was doing well for ukip. it's down to him at the end of the day, if he wants to do that we can't do a lot about it, can we? he hasn't ruled out returning to the tories but for now he is an independent who has once again raised the question of ukip‘s relevance. studio: we will see how the

resignation of douglas carswell from ukip is covered with other stories in tomorrow's newspapers at 10:30pm and 11:30pm, joined by ruth lee and john rental. i—storey breaking in the night of states which i suspect is going to come to late at least for the first additions, the scene in las vegas tonight, where there has been a shooting, we understand from a local hospital that one person taken to hospital that one person taken to hospital has died. a gunmen has barricaded himself into a bus along the las vegas strip, leading to a partial closure of the boulevard. the shooting was reported to have taken place on las vegas boulevard, not far from the cosmopolitan hotel and casino. you are seeing pictures from the associated press coming out live from las vegas, police presence

in the area. looks like it is going to bea in the area. looks like it is going to be a stand—off, who knows for how long. the gunmen who is believed to be involved in a shooting which has left one person dead as locked, barricaded himself inside a bus, police have surrounded the bus and are presumably going to try to make contact with the shooter inside. we will bring you more as we get it on the developing stories out of las vegas tonight. the us military has said that it has carried out an air strike at request of iraq at a place where hundreds of civilians are said to have died. iraqi forces are fighting to retake the city from the group that calls itself islamic state, at least 200 are reported to have been killed, many buried under the rubble. the united states says that it has opened a formal investigation. a former chief commissioner of the

metropolitan police has called for changes to security at westminster, following the attack there on wednesday. lord blair, who led the force during the 77 terror attacks, said there should be a review of the arming of police officers. one man arrested in birmingham remains in custody, others have been released, on bail, or told custody, others have been released, on bail, ortold no custody, others have been released, on bail, or told no further action will be taken. —— 7/7.14 on bail, or told no further action will be taken. —— 7/7. 14 people remain in hospital. home affairs correspondentjim kelly has more. voiceover: minutes after the terrorist attack in the precincts of the palace of westminster. on the ground is constable keith palmer, who was stabbed to death. his killer, khaled massoud, has been shot to death by police. meanwhile, armed officers here have left the scene to investigate the gates, where masood's car has mounted

the pavement and crashed. the gates, meanwhile, have been left unguarded and wide open. anyone could have got through. an understandable error according to a former head of scotland yard, who nevertheless leaves that in the future security will have to be more stringent. i'm absolutely certain that they will have to be a review now of the outer soft ring. always behind it is the inner core of armed officers, but pc keith palmer has paid for his life for that soft outer ring and i think his family at least, and everyone else, need reassurance. the bbc has obtained new footage of the police response. a fleet of cars carrying teams of marksmen racing down the embankment. this was shortly after khalid masood's trail of carnage which began on westminster bridge. questions remain unanswered about his route to radicalisation. he was a violent criminal before converting to islam more than a decade ago. one of his victims who survived but with serious injuries, this romanian tourist, who was hurled into the thames. she was in london with her partner,

who was also hurt. in romania, a friend paid tribute to the emergency services in london. translation: we would especially like to thank the doctors and nurses, all the medical staff, for everything they are doing to help them. today at scotland yard, police officers who were part of the emergency response laid flowers in memory of their colleague, keith palmer, who they tried to help. june kelly, bbc news. studio: those are the main stories this hour, i will be back with more atiopm. this hour, i will be back with more at 10pm. all this week across the bbc we have been running a series of stories and features as part of our state of sport week. it is time for the state of sports debate, hosted by our presenters.

hello, and welcome to the emirates old trafford, home of lancashire cricket club, they have been here since 1857. with a very good throw, you can just about reach the other old trafford. we are in the sporting hub of a major sports city. this is the bbc‘s state of sport debate. we are tackling the main issues affecting sport today. and we have brought together a prominent panel of leaders and achievers in sport. also, jessica is with our studio audience. thank you, david.

i will be with a select group of stakeholders and experts for some of their questions about the issues concerning them. this is of course the culmination of a special week of programmes and reports across the bbc about the state of sport. here's a reminder of what we have covered so far. certainly the figures as regards the prevalence of performance enhancing substances as an amateur level are incredibly alarming. this is the dark side of exercise. it is a hard situation. everybody wants to make something for syria. it can grow as big as football. the young generations are into digital news and everything, so there is no doubt.