More now from our Political Correspondent nick eardley. This is a document called operation yellowhammer. It is the Civil Service looking at potentially what could happen if the uk leaves the European Union in a few weeks without a deal. And at its heart are some pretty stark warnings of long delays at ports, at airports, at the eurotunnel, of the potential for certain fresh foods running out or becoming scarce, at least not all foods running out, but potentially some fresh food running scarce, and over all, a picture of some significant hardships in the uk on 31 october. The government says officially that it doesnt comment on leaks, but number ten have pointed out that this isnt what they expect to happen. This isnt the assumption of borisjohnson and his team. What it is is scenario planning, looking at various things that could happen. We know the uk government is putting a lot of effort and money now into preparing for no deal. They say they dont expect it to happen, its all part of the planning. Dozens of people are feared to have been killed after a bomb exploded at a wedding in afghanistan. Eyewitnesses say a suicide bomber detonated explosives in a packed reception hall in the capital, kabul. At least 20 people have been taken to hospital. No one has admitted carrying out the attack, the latest in a recent series across the country. Our correspondent Shoaib Sharifi is following developments in kabul. The incident happened right at a climax of the party, right after dinner, at around 10 1i0pm local time. Although only 20 wounded have so far been confirmed by one hospital, that footage that we have received, a video from inside, shows many people looking for their missing loved ones. One video shows one young boy saying he has got five brothers missing, and one man says his 14 year old boy was killed in the incident. Inside, the decorated seats of the Wedding Party shows stained with blood, and its feared eyewitnesses say that there may be more deaths and injuries, as it is dark, and the hospitals are the incident happened west of kabul, and the main emergency hospitals are in north of kabul, so later, more figures will emerge. Lets get some of the days other news at least four people have been arrested in the us city of portland, in oregon, during demonstrations by right wing groups and counter protestors. Hundreds of people gathered in the city centre, where they were met by a huge police presence. Thousands of cheering sudanese have filled the streets of khartoum to mark the signing of a power sharing agreement between the countrys military rulers and the civilian opposition, following months of pro democracy protests. The membership of a Transitional Sovereign Council is due to be announced later. Nearly 30 teenagers have been allowed to disembark on the italian island of lampedusa after more than two weeks at sea aboard the spanish rescue ship open arms. More than 100 migrants are still on the vessel. A rally organised by the Russian Communist Party has been held in moscow, calling for free and Fair Elections to the citys parliament next month. Meanwhile, opposition activists held small one man protests, in a move designed to circumvent restrictions by the authorities. Turkeys biggest city, istanbul, has been lashed by a heavy rainstorm, causing flash flooding. Parts of the historic grand bazaar, one of the worlds oldest covered markets, were submerged underwater. At least one person has died. You can get all of our latest stories on our website. Including more on brexit and what i know deal exit actually is. That is all in the bbc news website. British detectives investigating the murder of a young Police Officer have been given an extra 36 hours to question ten suspects. 28 year old pc Andrew Harper died of multiple injuries after he was dragged along by a vehicle while investigating a burglary. Mr harpers family said they have been left devastated by his death. Daniela relph reports. Colleagues, friends and the local community all came today to pay tribute where Police ConstableAndrew Harper lost his life. Almost exactly a month ago to the day, pc harper was getting married. Now, instead of heading off on honeymoon next week, his wife has to face life without him. A postmortem showed the Police Officer died from multiple injuries. Detectives have also revealed they are still trying to establish why a call to investigate a burglary ended so tragically. The cause of death is consistent with our current belief that andrew was caught between the vehicle and the surface of a road, and then dragged for some distance. However, the circumstances as to how andrew came to be out of his vehicle and caught under the suspect vehicle are as yet unknown. The hunt for evidence has continued throughout the day. There have been extended road closures, widening the search area. But the police focus has been on the four Houses Corner caravan and mobile home site, run by the local authority in West Berkshire and used by the travelling community. Access to the area has been restricted as the team leading the murder inquiry take charge. The police have now also confirmed that within an hour of the incident on thursday night, they came to this caravan and mobile home site, and it was here that all ten people who are currently in custody were arrested. Detectives now have until around midnight tomorrow to question the ten people being held. They are all male, aged between 13 and 30 years old. The death of pc harper has highlighted the dangers officers face in their everyday work. The police loss was today shared by other emergency services. A lot of people say we have sort of a dangerous job, but most of our opinions are ourjob is nowhere near as dangerous or difficult as the police or ambulance service. The Thames Valley force has described this as a complex investigation, both a professional and personal challenge, as they try to solve the murder of a much loved officer who was one of their own. Daniela relph, bbc news, sulhamstead in berkshire. A 17 year old has been charged with the murder of a lawyer who was stabbed with a screwdriver in newcastle on wednesday evening. Peter duncan, who was 52, died after being attacked outside a Shopping Mall in the city centre. Northumbria police say the teenager, who cant be named for legal reasons, will appear in court on monday. Riot police have cleared roads in hong kong after a standoff with pro democracy protesters, as the political crisis in the city continues for an 11th week. Earlier, thousands of teachers took to the streets in a peaceful show of solidarity. From hong kong, John Sudworth reports. Hong kongs summer rains have done nothing to dampen the fury. Most of it directed at the police, now seen as agents of a hostile state by people who say they are fighting for this citys freedom. Just a short drive away, china has stationed Paramilitary Police in the border city of shenzhen, designed, it seems, as a very visible and ominous warning. Are you worried that china will send troops into hong kong . No, because if they do it, they have to pay for it. So we are not afraid for anything. On the other side of this deeply divided city, pro beijing groups were rallying. They reject the claim that china is eroding hong kongs special status. And they support the police, who by nightfall were once again facing off against the pro democracy protesters, and sweeping them from the streets. Well, what began as a provocation by a small group of hard core protesters has turned into this a massive show of force by dozens of riot police, clearing a busy shopping street. It is a clear illustration of the intractable nature of hong kongs political crisis, and of the breakdown of trust on all levels. Chanting. Bystanders, drawn in by the scenes, also hurled abuse at the police. A once confident, outward looking city trapped in a cycle of recrimination and bitterness. John sudworth, bbc news, hong kong. Isaac cheng is the chairperson of the pro Democracy Organisation demosisto and has attended all of the protests in the past few weeks. Hejoins us now from hong kong. Issak, thank you so much for your time. We are going to see a rally and march later on on sunday isaac. Are you worried about more scenes of violence . Actually, the hong kong didnt put out the license of having a much today, and only gave a license of having an assembly today. So i think at least 500,000 people will be coming out on the street, so i think it must be over, the places they will protest at the assembly. We urge that the Hong Kong Police force do not use violence towards the protesters, because most likely today will be Peaceful Assembly only. We have been seeing more violent scenes from the police, from protesters as well. Do you fear that at some point in the near future china may intervene . Actually, there is some chances that the chinese army are actually coming to hong kong, but i think for this stage it is only a scare tactic from the communist party, who only want to fear hong kong people not to come out on the street again. But i think that actually here the communist party are really sending the chinese troops to hong kong, it will become International News and also will get the attention of International Society. So if they plan to do this, we urge the International Society to restrict the power of the chinese government. It is the 11th week of protests. As we have been saying, we are seeing more and more violent scene. Protesters worried that, such as yourself, that your risk of losing the freedoms you already have, should these violent scenes continue . I would say that our freedom has been lost slowly, when we are fighting against the government, and also we are fighting for the rights of having freedom. Actually, we are gaining the freedom, we are not losing them. But for us, for the protest, we are more concerned about if there is universal suffrage, and a visible future. Because at this stage the standards of the Hong Kong Government are going firmer and firmer. So we have to try to use different strategies to make the Hong Kong Government really listen to the demands of the hong kong people. Has there been any attempt by the Hong Kong Government to reach out to some more prominent figures of the protest movement, or have you yourself tried to reach out to the government to have a dialogue . think at this stage there is no one can represent a whole protest or the whole movement. But the five demands are whole movement. But the five demands a re really clear. Whole movement. But the five demands are really clear. Actually, if the government they have the will to talk to the protest or they have the will to urge to finish this movement oi will to urge to finish this movement orfinish this chaos, will to urge to finish this movement or finish this chaos, they can only at least accomplish a few of the five demands, and the hong kong people will feel that the government really wa nt people will feel that the government really want to solve the problem. At this stage, none of the five demands have been achieved, so we will still keep on fighting. You talked about tactics a little bit earlier. Is there a new conversation amongst protesters about trying to avoid violence going forward, trying to change the way things are being done . You mean the violence coming from the police, army, or the violence coming from the protesters . The violence coming from the protesters. I think there is a strict mechanism inside the process. Actually there is a lot of communications and different groups that talk about the protest strategy like that. And there is some self restricting mechanisms inside, so i think they dont have to worry about the violence, therefore. But i think the violence, therefore. But i think the most chaotic scenes are because of the police force, but not the hong kong protesters. Actually, the hong kong protesters. Actually, the hong kong protesters. Actually, the hong kong protesters, their emotions are checked by the forces used by the Hong Kong Police. Thank you so much for your time. This is bbc news. The latest headlines a leaked government report has warned of shortages of fuel, food and medicines if britain leaves the eu without a deal on 31 october. A suicide bomber has targetted a wedding reception in kabul. Officials say a number of people have been killed and injured. Hundreds of mostly female protesters have taken to the streets of mexico city to demand justice for two teenage girls they say were raped by police. A 17 Year Old Girl accused four policemen of raping her in their patrol car, and a 16 year old said a policeman raped her in a museum. During the protest a city Police Station was daubed in paint, glass doors were broken, and a fire started. The citys mayor said the cases needed to be investigated but condemned the protests. David agren is a journalist based in mexico city. He told us more about the protests. These protests often get going just spontaneously, they get going on social media and they tend to be very last minute. Especially the womens one, they often dont have a lot of advance planning. Part of that has to do with how these stories have unfolded. There tends to be multiple accusations and the responses from the authorities have really let a lot of people unsatisfied. In the sense that, even though there has been a change of administration in mexico city, a female mayor, a female prosecutor, the cases still arent being treated with the seriousness that they should be. What is the larger picture of sex Sexual Assault in mexico . Is it unusual for police to be accused of assaulting girls . No, you know, not at all. What tends to happen i see with the police that trust in police is very low in mexico. I believe its among the i believe its on the surveys of lowest trusted institutions in the country, its among the least. And there is often a saying in mexico that police jobs are given to people who cant get any other job. And so the training is alsojust dismal. So what tends to happen is police just arent the best, arent the most responsive. And you know, that its not unheard of that these Sexual Assaults committed by police occur. What tends to happen more often is that there are cases of Sexual Assaults that just are not treated properly, are not investigated at all and thatjust tends to be a question of culture, theres obviously in many places a machista culture, theres also the police just tend to be inept and they dont take these cases seriously. And then the larger authorities, when they can issue these alerts for what are called femicides femicising in their states. A lot of politicians here see it as a Public Relations problem, more than seeing it as some sort of crisis. These cases just go unsolved and i think that is what is really driving the protests this time. More on sudan celebrations are continuing after military and civilian leaders signed a power sharing deal. It paves the way for a Transitional Government and, eventually, elections. It also marks the end of what has at times been a bloody process since the ousting of president omar al bashir. Zeinab badawi reports from khartoum. There can be no doubt that it is a historic day in sudan. There was a mood of optimism and hope amidst the celebrations. The ceremony, attended by visiting dignitaries, has taken months of closely fought negotiations between the military and leaders of the protest alliance. Can you guarantee. The man who signed the agreement on behalf of the military told me that theyre genuine about handing power to civilians. Translation well stick to every single letter weve agreed on. Even without this agreement, we have to work in this direction because its in the countrys interest, its not our interest. Therefore, well carry out the agreement, well stick to it and support it. But theres still suspicion and mistrust of the military. Todays deal comes after around 100 demonstrators were killed in khartoum injune when security supporters tried to disperse this sit in. The violence has been blamed on the Rapid Support forces led by general hemeti, who has been described as the most powerful man in sudan. He denies any involvement. On the streets today, some of the mistrust seemed to give way to hope. Translation we hope sudan can move forward so we can be proud of our country and forget about the guns and move towards peace. Translation protesters demanded civilian rule because they wanted a better life. Today is a historic day for sudan and hopefully this deal will meet the demands that the revolution was based on. The military and civilians make for uneasy bedfellows, but for now it seems the sudanese people are giving the military the benefit of the doubt and are working with them together to create a new sudan. Zeinab badawi, bbc news, khartoum. An orphaned sea mammal that became famous after being rescued in thailand, has died. The rare marine dugong was one of only a few hundred left in the region. It died from complications after swallowing plastic. Kate harley reports. She was just a baby when she was rescued, orphaned and stranded on a beach in the south of thailand. Rescuers named her marium, meaning lady of the sea. Incredible images of the rare dugong went viral after she was seen nuzzling into marine biologists. She was nursed back to health before being released back into the sea. But last week marium was found sick and exhausted and couldnt be saved. Vets conducted an autopsy, finding that she died due to an infection after ingesting a great deal of plastic. With pieces as large as 20 centimetres long found in her stomach. The vets who looked after her said they are devastated by the loss of the dugong who had been named the nations sweetheart. Many have