Large crowds in Place de la Republiquepublished at 17:46 Greenwich Mean Time 7 January 2015
Large crowds are gathering in Place de Republique in central Paris following the attack on Charlie Hebdo magazine's office.
Gunmen have attacked the offices of French magazine Charlie Hebdo in Paris, killing 12 people including the editor and celebrated cartoonists
The hunt is on for three suspects, named by police as Hamyd Mourad and brothers Said Kouachi and Cherif Kouachi.
It is the deadliest terror attack in France since 1961 during the Algerian war
President Hollande said it was an act of "extreme barbarity", with many foreign leaders also condemning the attack
In 2011, the satirical publication was firebombed after naming the Prophet Muhammad as its "editor-in-chief"
Mohamed Madi, Sherie Ryder, Julia Macfarlane, Alastair Beach and Victoria Park
Large crowds are gathering in Place de Republique in central Paris following the attack on Charlie Hebdo magazine's office.
The BBC has put together a photo gallery of the attack today at Charlie Hebdo magazine:
French football club Lille has said it will hold a minute's silence before its forthcoming match against Evian. Both clubs are due to wear black armbands for the tie.
People are holding up pens and pencils at a rally in Paris's Republic Square.
British newspaper The Independent tweets, external that there will be a vigil in London's Trafalgar Square this evening in solidarity with Charlie Hebdo magazine
The editor of British satirical magazine Private Eye Ian Hislop has released a statement, external to the British press on the Charlie Hebdo attacks.
"I am appalled and shocked by this horrific attack - a murderous attack on free speech in the heart of Europe.
I offer my condolences to the families and friends of those killed - the cartoonists, journalists and those who were trying to protect them.
They paid a very high price for exercising their comic liberty.
Very little seems funny today."
BBC Trending has published a post looking into Charlie Hebdo's mysterious final tweet before the attack in Paris.
"Is it just a coincidence that this image was tweeted at around the time of the attack? The illustration bears the signature of Honoré, a famous French illustrator - but it's unclear whether it's his work or when it was actually drawn. BBC Trending has tried to contact Honoré and will post an update if we hear back from him."
Luc Bronner, an editor from Le Monde, has tweeted a copy, external of a joint statement from Radio France, Le Monde and France Télévisions offering technical support to help Charlie Hebdo continue working after today's attack.
@marchanddenuage took this photo of a demonstration in Lyon, France.
emails: Simply to add our name to the growing list of publishers who in their own small way offer their support to the friends and family of those journalists who were killed and injured in today's attack in Paris. My father fought in WW2 along with many others to secure all our freedoms - freedom of speech being the upmost freedom.
Despite speculation that the attack was a response to Charlie Hebdo's run of controversial cartoons, some publications are taking the decision to reprint them. In Egypt, the daily Al Masry Al Youm newspaper has run a selection of the magazine's illustrations, external - including the recent cartoon lampooning Abu Bakr al-Baghdadi, the leader of Islamic State.
tweets:, external Can't sleep tonight, thoughts with my French cartooning colleagues, their families and loved ones #CharlieHebdo See photo, external
Le Monde has run the following cartoon from Plantu, one of its regular illustrators, in tribute to the victims of today's attack. It says "With Charlie Hebdo, wholeheartedly."
@chrisPcritttertweets:, external Much respect to #CharlieHebdo for their bravery and fearlessness in their mission and art. #JeSuisCharlie
Hassan Chalghoumi - an imam of the Paris suburb of Drancy, visited the site of the attack at Charlie Hebdo headquarters.
Of the attackers, he said: "Their prophet is Satan. There is no connection between the Islamic faith and this minority."
The Booker Prize-winning writer has released the following statement, external: "Religion, a mediaeval form of unreason, when combined with modern weaponry becomes a real threat to our freedoms.
"This religious totalitarianism has caused a deadly mutation in the heart of Islam and we see the tragic consequences in Paris today.
"I stand with Charlie Hebdo, as we all must, to defend the art of satire, which has always been a force for liberty and against tyranny, dishonesty and stupidity.
"'Respect for religion' has become a code phrase meaning 'fear of religion.' Religions, like all other ideas, deserve criticism, satire, and, yes, our fearless disrespect."
Charlie Hebdo typified the long-running tradition of scurrilous French satire. Here is one of its more provocative front pages from 2012, showing an Orthodox Jew pushing an old Muslim in a wheelchair, both shouting "You mustn't make fun!"
A reminder, we profile the magazine here: Charlie Hebdo and its satirical role
tweets: , externalThe Queen has sent this message to @fhollande and the people of France following the attack in #Paris today. See photo, external
Adam: For those who know Charlie Hebdo they are a satirical publication. They cover any topics, any religion. Does a small group of lunatics really think they can shut freedom of speech and press with their violence?
The horrific attack at the Charlie Hebdo office on January 7, 2015, led to the death of 12 people, including two policemen.
Nothing can justify such an attack and those who organised and committed these crimes should be brought to justice, Human Rights Watch said.
France should protect freedom of expression and guard against any backlash against particular groups.