0710 
 
 A state of emergency was declared by the Prime Minister of France, Francois Hollande last night following the attacks in Paris. 
 
 Eyewitnesses describe the attack being heard from the stadium at the time Germany was playing France and at the Bataclan concert venue. 
 
 0715 
 
 Eliya El-Haddad, an eyewitness, was caught up in the evacuation of the Stade de France when the attacks happened. 
 
 Nabila Ramdani is a French journalist working in London who will be with us through the programme. 
 
 0728 
 
 One of the many questions being asked this morning is: why France? It's less than a year ago that twelve people were murdered in attacks that began at the offices of the satirical magazine Charlie Hebdo. And now this... the worst attack in Europe since 2004 where 191 people were killed in Madrid. 
 
 Peter Neumann is Director of the International Centre for the Study of Radicalisation and King’s College London. 
 
 Mark Rowley is The Metropolitan Police Service’s Assistant Commissioner. 
 
 0733 
 
 A state of emergency was declared in Paris by President Hollande last night. He also said the country's borders were being closed but officials said later they were just re-imposing border checks that had been removed after Europe created its free-travel zone in the 1980s. 
 
 Chris Morris is the BBC’s Europe Correspondent. 
 
 Christophe Premat is French socialist MP for northern Europe. 
 
 0750 
 
 Further analysis on Paris attacks (See 0728). 
 
 Claude Moniquet is former French intelligence official, now with the European Strategic Intelligence and Security Centre. 
 
 0810 
 
 Further analysis on Paris attacks (See 0728). 
 
 0820 
 
 Edith Cresson is the former Prime Minister of France. 
 
 0840 
 
 Frank Gardner is the BBC’s Security Correspondent. 
 
 Dr Asiem El Difraoui is a jihadi expert working with French government on counter terrorism strategies. 
 
 (All timings subject to change) ||||| After explosions and gunfire terrorized Paris Friday night, police are reporting as many as 60 killed, with more hostages held inside the Bataclan theater, where the American band Eagles of Death Metal was playing. The death count is still in flux, however, as the violence continues across the city. 
 
 Multiple locations are being targeted in the attacks, and reports paint a chaotic picture as the violence continues. As the internet and social outlets attempt to make sense of the tragedy, one very important hashtag has surfaced: #porteouverte. Parisians are using the hashtag on Twitter to signal they need a safe place to go, or can provide it to people on the street. Most of the messages can be interpreted as "I'm home, in this area, contact me if you need a place to go." 
 
 There's a problem, though: The hashtag is being overwhelmed by people tweeting about how to use it, and how inspiring it is... which is pushing messages down the stream that are actually advertising or asking for a place to go. If you're looking for or offering a safe location, use the hashtag—otherwise, you could be doing more harm than good. ||||| ENLARGE On Twitter, Parisians used the hashtag “#PorteOuverte”—or “open door” in French—to offer shelter to stranded visitors. Photo: Eric Thayer/Reuters 
 
 Social-media companies Facebook Inc. FB 1.05 % and Twitter Inc. TWTR -0.71 % provided new tools allowing people around the world to track and discuss the violent attacks in Paris on Friday with unprecedented speed and depth. 
 
 Facebook activated its “Safety Check” feature Friday, allowing the site’s users in the area of the attacks to mark themselves as safe on their profiles. This marked the first time the tool was enabled for violent attacks. Twitter’s news-curation tab, known as “Moments,” featured tweets, images and videos from news agencies and bystanders that showed snippets of the attacks’ aftermath. 
 
 Alphabet Inc.’s Google said it is making international calls to France from its Hangouts mobile communication app free through the weekend, so people can check on the status of friends and relatives. The free calls can be made through Google’s Hangouts app on Android phones and iPhones. 
 
 On Twitter, Parisians used the hashtag “#PorteOuverte”—or “open door” in French—to offer shelter to stranded visitors. On Periscope, the live-streaming app owned by Twitter, a user posted a video of the scene around the Bataclan concert hall, the site of one of the attacks. Other users posted live videos of their reaction to the violence, often with police sirens blaring in the background. 
 
 “My thoughts are with everyone in Paris tonight,” Facebook CEO Mark Zuckerberg said on his Facebook page. “Violence like this has no place in any city or country in the world. We’ve activated Safety Check, so if you’re in Paris you can mark yourself safe or check on your friends and family.” 
 
 Facebook’s safety check tool been activated five times since its introduction in October 2014. The feature is activated by the company’s “social good” team, which is tasked with building features for Facebook that help people in crisis. The social network was spurred to develop the product after the 2011 earthquake and tsunami in Japan, Mr. Zuckerberg has said. 
 
 Facebook sends users who are detected in a crisis zone a message asking if they are safe. The users can then use the tool to indicate on their profiles that they are safe. Users can also mark others as safe or keep tabs on other Facebook connections in the affected area. The information is only visible within a user’s Facebook network. 
 
 Facebook first activated the tool on April 25 after a big earthquake hit west of Nepal’s capital, Kathmandu. More than seven million people in the area were marked safe, notifying more than 150 million people connected to them, Mr. Zuckerberg said in a later post. 
 
 Facebook turned it on again after a powerful quake struck Chile in September. The feature was also enabled twice in October, after Hurricane Patricia hit Mexico and when an earthquake shook Afghanistan, Pakistan and the surrounding region. 
 
 This year, Facebook and Twitter have invested in delivering real-time news to their users. 
 
 In June, Facebook’s photo-sharing app Instagram overhauled its “Explore” tab, making it easier for users to find images by place and hashtag. “People are hungry for what’s happening right now in the world,” Instagram CEO and co-founder Kevin Systrom told The Wall Street Journal at the time. 
 
 In October, Twitter unveiled “Moments,” a slimmed-down version of its own feed with tweets selected by a team of editors. That same month, Facebook said it has indexed more than two trillion posts across the social network so users can track news events as they unfold. 
 
 Write to Deepa Seetharaman at Deepa.Seetharaman@wsj.com ||||| In the midst of a series of alleged terrorist attacks in Paris on Friday night that have left at least 129 dead and more than 350 wounded, some Twitter users in the city immediately began using the hashtag #PorteOuverte, or "open door," to offer their homes as shelter for those afraid to be on the streets with nowhere to go. 
 
 Social media users were tweeting invitations to their homes for those who might "need help" or a "place to sleep." Those offering said they would provide their address to those interested through direct messages. Others included their addresses in the tweets. 
 
 Read the tweets here or read some examples below: 
 
 guys if you're in paris and you don't speak french : the hashtag #porteouverte is ppl who can welcome you just dm them 
 
 Anybody who's stranded in Paris and needs shelter and somewhere safe, any Sikh Gurdwara (temple) will be happy to accommodate #PorteOuverte 
 
 Hey tourists in #Paris if you need help or some place to sleep around Jussieu 5th arrondissement, my door is open. #PorteOuverte #OpenDoor 
 
 You're welcome to our home if you're afraid of going home through Paris and are near La Vilette #porteouverte 
 
 PorteOuverte bd Davout me contacter en mp 
 
 Help #PorteOuverte 
 
 PorteOuverte boulevard de Charonne, 20eme limite 11eme. Be safe. 
 
 PorteOuverte 3 rue St Joseph 
 
 Anyone, come to Rue Keller. I can get the door open if you need. Lot of cops here. #PorteOuverte 
 
 A series of attacks Friday night took place at multiple restaurants and bars in the city. A hostage situation taking place at the Bataclan theater, where the American rock band Eagles of Death Metal were performing, led to more than 100 people being held hostage and 89 killed. An explosion occurred at the Stade de France during the France vs. Germany soccer game. 
 
 The death toll is currently at least 129 people, according to Le Monde. 
 
 Nov. 14, 2015, 1:42 p.m. Eastern: This story has been updated. ||||| Tweet with a location 
 
 You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
– Amid the horror of the Paris terror attacks, there was a response from ordinary citizens that the city can be proud of. With the hashtag #PorteOuverte, meaning "open door," Parisians offered shelter to tourists and others stranded by the chaos, Mic reports. People were desperate to find safe havens because they had been evacuated from buildings but had been told the streets and public transport were unsafe, French-Algerian journalist Nabila Ramdani tells the BBC. Taxi drivers turned off their meters and started taking people home for free, while there were "many others stuck in shuttered bars, restaurants, some even locked in kitchens," tweeted France24 correspondent Sophie Pilgrim. During the attacks, Facebook activated its new "Safety Check" feature for the fifth time ever and the first during a violent attack, reports the Wall Street Journal. The feature sends Facebook users in areas affected by a crisis a message asking whether they are safe, and then gives them the option of checking "Yes, let my friends know," to let their friends know they are OK. The feature was first activated after the Nepal earthquake earlier this year and was turned on during three subsequent natural disasters, the Journal notes. The Paris response could point the way for social media use during future crises, though Wired reports that there was one problem with the #PorteOuverte hashtag: So many people tweeted about how inspiring it was that users worried real offers of help might be crowded out.