French police have released three of the 12 suspects arrested in an anti-terror sweep following the attacks in Paris by Islamic extremists that killed 17 people and put Europe on high alert.

French police have released three of the 12 suspects arrested in an anti-terror sweep following the attacks in Paris by Islamic extremists that killed 17 people and put Europe on high alert.

Widening a European counter-terrorism dragnet, Greek authorities detained four terrorism suspects today, including a man believed to be the ringleader of a Belgian jihadi cell.

Said Kouachi, one of the gunmen who attacked the offices of the satirical magazine Charlie Hebdo, has been quietly buried, officials say.

Amedy Coulibaly, the gunman who killed four hostages at a Paris kosher supermarket, rented a small suburban house the week before the attack and filled it with an arsenal of up-to-date weaponry, police have said.

Charlie Hebdo's defiant new issue sold out before dawn around Paris, with scuffles at kiosks over dwindling copies of the paper depicting the Prophet Mohammed.

Bulgarian authorities say they have arrested a French citizen believed to have links to one of the brothers suspected of the terror attack against the Charlie Hebdo magazine.

France has ordered 10,000 troops on to the streets to protect sensitive sites - half of them to guard Jewish schools – as it hunts for accomplices to the Islamic militants who left 17 people dead as they terrorised the nation.

Nearly 5,000 police officers have been deployed to protect Jewish schools across France as the country remains on the highest state of alert after last week's terror attacks.

Farid Benyettou, the man believed to have radicalised the Kouachi brothers involved in the Paris terror attack, has been working since December as a trainee nurse in the emergency services at a Paris hospital where victims of the Charlie Hebdo attack were treated.

FRENCH media estimate up to 3m took part in the Paris rally for unity against terrorism — more than the numbers who took to the capital’s streets when the Allies liberated the city from the Nazis in the Second World War.

World leaders have joined tens of thousands of people in a giant rally of national unity to honour the 17 victims of the Paris terror attacks.

Five people detained in connection with the terror attacks in France have been released from custody, the Paris prosecutor’s spokeswoman said.

A huge security operation is being prepared ahead of unity marches in France, as the hunt for a fugitive linked to the Paris massacres took a new twist.

Details of how the police rescued hostages without a single loss to civilian life in the French terror attacks have emerged.

Key members of the French government will meet today to decide on new measures aimed at thwarting a repeat of the attacks in Paris that saw a massacre of 12 people at a satirical newspaper, and a supermarket bloodbath that left four hostages dead.

French detectives are continuing to search for fugitives suspected to have been involved in the Paris massacres, as details of how police foiled the terrorists’ operations have begun to unfold.

The dead brothers believed to have massacred 12 people in Paris were poverty-stricken orphans set on the path to terrorism by a radical preacher.

As the French hostage crisis came to a bloody end last night with the loss of 20 lives, al-Qaeda claimed it had directed the attack against the satirical magazine ‘Charlie Hebdo’ in Paris "as revenge for the honour" of Islam’s Prophet Mohammed.

President Francois Hollande warned that the danger to France, home to the European Union’s biggest communities of both Muslims and Jews, was not over yet.

The terrible events unfolding in France show how very dangerous extremism can be — even for extremists.

Security forces dramatically ended a three-day terror spree around Paris, killing the two al Qaida-linked brothers who staged a murderous rampage at a satirical magazine, and an associate who seized a kosher supermarket to try to help them escape.

French President Francois Hollande has called on the country to “remain vigilant” as the hostage crisis which started at the Charlie Hebdo magazine massacre came to a bloody end with the loss of at least 20 lives.

At least four people, including the attacker, have died at a kosher grocery store in Paris where a gunman took several hostages, police officials said.

Police union representative Christophe Crepin has told LCI television that it appeared that the gunman who took hostages at a kosher market in Paris has died after police stormed the building.

The two brothers behind the Charlie Hebdo terror attacks in Paris have been killed, according to reports, as police stormed both siege scenes.

France has been rocked by a fresh hostage situation after the hunt for the Charlie Hebdo gunmen developed into a siege.

The brothers who are suspected of carrying out Wednesday's shootings at the offices of satirical Charlie Hebdo on Wednesday are reportedly holed up in a printworks building on the outskirts of Paris.

Two brothers are suddenly the most wanted men in France, suspected of the armed onslaught on a newspaper office that claimed a dozen lives and horrified this country and much of the world.

New security measures, including retaining information on everyone who takes a flight into or out of the EU, are back on the agenda following the brutal murders in Paris.

One suspect sought in the deadly shooting at a French satirical paper has turned himself in, as police hunt for two heavily armed men with possible links to al-Qaida.

The youngest of the three suspects in the terror attack on a French satirical magazine in which 12 people died has handed himself in to police, according to reports.

Police were last night searching for two brothers from the Paris region and a man from the northeastern city of Reims, over yesterday’s shooting at satirical weekly magazine Charlie Hebdo, a police official and government source said.

An anti-terror raid is reportedly underway in the city of Reims in France after police identified three suspects in the French terror attack.