The New Yorker magazine has tweeted an image of its forthcoming front cover:

Image source, New Yorker

Image source, AFP

More details have emerged about Barack Obama's visit to the French embassy in Washington.

The US president signed a book of condolence and observed a minute's silence.

According to the Reuters news agency, he wrote: "As allies across the centuries, we stand united with our French brothers to ensure that justice is done and our way of life is defended. We go forward together knowing that terror is no match for freedom and ideals we stand for - ideals that light the world."

French ambassador Gerard Araud welcomed Mr Obama's signing of the book as a "a moving and highly significant gesture", the AFP news agency said.

Le Figaro newspaper is reporting that the local websites of two towns, Ezanville and Goussainville, have been hacked. The paper says the culprits posted messages including "Free Palestine", "Death to France" and "Death to Charlie".

The two sites currently appear to be offline, though the messages still show up on a Google search for Goussainville.

Le Parisien says that, external France's Muslim community is "traumatised" by Wednesday's deadly attack. "Some fear increased stigmatisation," the newspaper reports.

Friday's editions of French newspapers Le Figaro and Liberation both focus on the continuing manhunt and also on an emotional day of mourning across the country.

Gillet Franck: We should not forget that Charlie not only laughed at Muslims but also at every known religion. These are not "attacks" against believers, there is no hate against individuals, this is humour. You can say you don't appreciate it. But you can't force people to shut up because you don't like what they are drawing.

Barack Obama has visited the French embassy in Washington to pay his respects following the deadly attack on Charlie Hebdo.

The attacks once again dominate the UK papers - though some are focusing on the words of MI5 chief Andrew Parker that Britain faces a severe terrorist threat.

Image source, EPA

Thousands rally in The Hague and Rotterdam. Rotterdam mayor Ahmed Aboutaleb tells the crowd there in French: "Tonight I am Parisian and I am Charlie; tonight we are all Parisian and we are all Charlie."

UN Secretary General Ban Ki-moon has strongly condemned the attack on Charlie Hebdo.

He made an appeal for tolerance and spoke of the Muslim French policeman who was shot dead by the gunmen.

"We now know that policeman's name. He was Ahmed Merabet. He himself was a Muslim," Mr Ban told reporters at UN headquarters.

"This is yet another reminder of what we are facing together. It should never be seen as a war of religion, for religion or on religion."

A demonstrator holds a placard in tribute to the victims of the Charlie Hebdo attack in Paris. The rally was organised by the NGO Rio de Paz ("Rio of Peace") in Niteroi, near Rio de Janeiro

Image source, Reuters

Police are investigating reports that one of the Kouachi brothers travelled to Yemen in 2011 to train with al-Qaeda-affiliated militants.

Said Kouachi, 34, is reported to have spent some months with al-Qaeda in the Arabian Peninsula (AQAP), one of the group's most active affiliates.

Ken Dilanian
Associated Press, Intelligence Writer

A senior US counterterrorism official says the two brothers named by French authorities as chief suspects in the killings at the Charlie Hebdo magazine in Paris were on the US no-fly list.

It would not be unusual for known extremists to be placed on the no-fly list - Cherif Kouachi had served 18 months in prison for recruiting militants to fight the US in Iraq.

The director general of Britain's domestic intelligence service MI5, Andrew Parker, has said in a rare public appearance that the Charlie Hebdo attack was a "terrible reminder" of the evolving terror threat that has been exacerbated by the Syrian crisis.

He warned that al-Qaeda cells continued to attempt attacks, while MI5 continued to deal with smaller-scale "lone wolf" attacks which have become a recent trend. He said that the number of "crude but potentially deadly" plots have increased.

He added that transport networks and iconic landmarks were among Western targets of "complex and ambitious plots" by Syria-based extremists.

Image source, MI5

Karim Assad emails: I am a Muslim and I am proud to be French. I owe everything to France. When my family had no money, France paid for my tuition, when my father was ill, France paid for his medical care. Today, I manage a multi-million euro business and I owe it to France. I think we should throw out all suspected extremists out of Europe and specially those with a previous conviction. There is no other way. Vive la France.

Laurent Leger, a Charlie Hebdo journalist who survived the attack, speaks to France TV, external about his experience:

"We heard noises that sounded like firecrackers - we did not understand what was happening. Then a man burst into the meeting room. There was a smell of gunpowder. He shouted 'Allahu Akbar' twice ("God is greatest" in Arabic) and then he started firing. It all went very quickly.

"I just had the time to throw myself under a small table in a small recess. I was crouching there and saw my colleagues lying on the ground. I was lucky that the room was so small the gunman could not easily walk around the table to look behind it. There was a long silence, then I heard him step away. As he left I heard him tell a woman in the newsroom: 'We don't want to kill women.' He then exchanged a few words with another man and that's when I realised that they were two."

Image source, FRANCE TV

Alan Rusbridger, editor of the Guardian newspaper, tweets, external that Guardian Media Group will be donating £100,000 ($151,000; 127,570 euros) to Charlie Hebdo magazine.

Image source, Twitter

Novelist Michel Houellebecq suspends the promotion of his new book Soumission (Submission), which is about a fictional Muslim French president. Houellebecq's agent says he was "deeply affected" by the death of his friend Bernard Maris, one of the 12 killed on Wednesday, France TV reports, external.

Image source, AFP

A member of the French police intervention force looks through the scope of his rifle during searches in Fleury, northern France.