Image source, AFP / Al Furqan Media

It has been reported that Abdelhamid Abaaoud was located in France throughout Friday's attacks despite IS's claim earlier this year that he was actually in Syria.

But there are plenty of examples where jihadists have used disinformation to mislead intelligence agencies about the status of their operatives, often invoking the religious concept that "war is deception" - a quote attributed to Prophet Muhammad, BBC Monitoring reports.

The most high profile case was that of Said al-Shihri, described as the second-in-command of al-Qaeda in the Arabian Peninsula, who was reported to have been killed in an operation in Yemen.

In 2013 some pivotal online jihadists claimed they had deliberately spread false news about al-Shihri's death the previous year in order to mislead the Yemeni and US authorities, the Jihadist Media Team at BBC Monitoring says. 

Al-Shihri was later confirmed killed in another US drone strike.

The best-known UK example of a similar attempt at subterfuge is Imran Khawaja, who faked his own death to return to the UK. Markedly less successful, he’s currently serving 12 years in jail.

Incidents of the magnitude of those that took place in Paris on Friday are extremely rare. But how should you react if caught up in a major attack?

The authorities do prepare for these emergencies but what advice is there for ordinary people? Read Camila Ruz's piece for the BBC Magazine here.

Image source, Rex Features

President Hollande said he would strengthen the judiciary in France substantially. He announced more police positions, more customs officers and said there would be no post closures within the army.

President Hollande said: "The concept of the terrorists is to plunge our country into division" but he said France's priority was now "eradicating radicalisation".

"France will remain a country of liberty and culture...France will never give in to fear," he said.

French President Francois Hollande has said the Islamic State group is "threatening the whole world" and the entire power of the government is to be put towards protecting French people against terrorists.

Speaking to an assembly of French mayors he said: "We need a robust legal framework to confront the circumstances...I have decided that we should reestablish control of our frontiers."

The Islamic-State-linked Furat media group has released a new French-language video celebrating the Paris attacks, and threatening more violence against France, BBC Monitoring reports. 

The film features three French-speaking militants saying the attacks were carried out "in revenge for the suffering of Muslims at French hands". 

They praise the previous attacks by Mohammed Merah in 2012 and Amedy Coulibaly in January 2015, and threaten more, saying they will "strike at the heart" of Paris. 

The video also features an Islamic State French-language anthem.

Image source, AP

The French warship Charles de Gaulle was deployed to the eastern Mediterranean on Wednesday. President Hollande said the vessel would enable France to multiply its strikes against Islamic State by four times.

French President Francois Hollande addressing an assembly of mayors in Paris says the purpose of the raid on Saint Denis was "to neutralise terrorists who had links to the perpetrators of Friday's hideous crimes". 

He said police endured "terrifying conditions" to carry out the raid. The president repeated his earlier message that France was at war against Islamic State militants. 

President Hollande also praised the residents of Saint Denis for their courage and calmness during the police operation.

President Hollande is giving a speech to an assembly of mayors in Paris. He is giving details of what happened during the raid in Saint Denis and paying tribute to the security forces and local authorities.

It is is still not clear whether Islamic State militant Abdelhamid Abaaoud has been arrested or killed in the Saint Denis operation.

"It is impossible to tell you who was arrested. We are in the process of verifying that. Everything will be done to determine who is who," Paris prosecutor Francois Molins says.

BBC reporter Howard Johnson took this picture from a Paris newsstand. Weekly magazines all reacting to Friday's attacks.

A young woman blew herself up by exploding her suicide belt and a man was shot, Paris prosecutor Francois Molins says. 

He said the "terrorist was also found during the operation - he was hit by bullets and a grenade".

Mr Molins confirmed three people were arrested inside the building and two other people were arrested outside the apartment including its alleged owner.

All 129 victims of the Paris attacks have been identified while many casualties remain in a critical condition, the French government says.

A total of 221 people remain in hospital, dozens of them seriously hurt, a statement from the French cabinet said. 

German Chancellor Angela Merkel says that it was German security services who took the decision to cancel the Germany-Netherlands football match on Tuesday, Reuters reports. 

Tom Burridge reports from Saint Denis as the seven-hour police raid comes to an end. The world's media and crowds of onlookers watch as police and army officers stand guard.

French Interior Minister Bernard Cazeneuve praises the courage of the security forces in an impromptu press conference in Saint Denis. 

Image source, Getty Images

The Paris suicide attacker identified as 25-year-old Ahmad al-Mohammad from the northwestern city of Idlib may have reached France faster and more easily because asylum seekers were rushed across some national borders at the height of the migration crisis in Europe this year, Reuters reports. 

It says that the measures were implemented to avoid bottlenecks after Hungary closed its borders.

The true identity of the attacker, who blew himself up near the Stade de France,  has become a key line of inquiry for French investigators, Reuters says, with the focus on whether the passport found near his body is genuine.

An accomplice may have travelled with the bomber as he went through the Balkans to western Europe after entering Greece posing as a Syrian refugee, counter-intelligence and police sources quoted by Reuters say.