France says it has mobilised 115,000 security personnel in response to the attacks
Police probing Friday's attacks in Paris have been searching premises they believe were used by the attackers.
A
car rented by Salah Abdeslam, the suspected eighth gunman who is now
the subject of an international manhunt, is also being inspected.He or his brother Brahim, named as another attacker, are thought to have rented a flat and two hotel rooms.
The so-called Islamic State (IS) group says it carried out the multiple attacks in which 129 people died.
Officials say that 117 of the victims have now been identified.
A Belgian-registered black Renault Clio was found parked near Montmartre in northern Paris. After police sealed off the area and ensured there was no booby-trap, the vehicle was towed away for forensic examination.
Investigators believe the car may have been used to bring the attackers to and from Belgium, from where French authorities say the attacks were organised.
Images on French media of one of the hotel rooms being examined show syringes and tubes which could be bomb-making equipment.
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Salah Abdeslam is believed to have fled across the border to his native Belgium. Belgian police have released more pictures of him.
On Tuesday French media reported that a French jihadist, Fabien Clain, had been identified as the voice in a recording issued by Islamic State in which it said it had carried out the attacks.
New pictures of suspect Salah Abdeslam have been released
In an effort to prevent more attacks, France has mobilised 115,000 security personnel, according to Interior Minister Bernard Cazeneuve.
Mr Cazeneuve said 128 more raids on suspected militants had been carried out. French warplanes also carried out fresh strikes against the IS stronghold of Raqqa in northern Syria, the army general staff reported, destroying a command centre and training centre.
Russia's security chief said earlier on Tuesday he believed terrorists were behind the downing of a Russian jet in Egypt last month, killing all 224 people on board. IS has said it destroyed the plane.
Russian Defence Minister Sergei Shoigu said Russian planes had intensified their air campaign, hitting positions in the Syrian cities of Raqqa and Deir al-Zour.
Meanwhile, Belgium's government has raised its terror threat level because of the failure so far to arrest Abdeslam. Tuesday's football match between the national team and Spain has been cancelled as a result.
team and Spain has been cancelled as a result.
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Police are investigating a car thought to have been used by the attackers
German media reported five arrests near Aachen, on the Belgian border. Early reports said the operation was linked to the attacks, although it is not not clear whether it was.
Also on Tuesday, France invoked a previously unused clause in the Treaty on European Union obliging other member states to provide it with "aid and assistance by all means in their power".
Within minutes, EU foreign policy chief Federica Mogherini said all 28 member states had agreed.
After meeting French President Francois Hollande, he said everyone understood that after Paris and other recent attacks "we have to step up efforts to hit them at the core" and improve border security.
He added that Syria was weeks away from a "big transition" after international talks in Vienna at the weekend.
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- Extension of state of emergency by three months
- Changes to the constitution to allow the government to revoke citizenship of any convicted terrorists of dual nationality. Currently only those born outside France and naturalised can lose their citizenship
- Measures to speed up expulsion of foreign nationals considered a threat to public order
- Budget increases and extra recruitment to security forces and judiciary
UK Chancellor George Osborne said in a speech that IS was trying to develop the ability to launch deadly cyber-attacks on the UK, an announced a doubling of the UK's investment in fighting cybercrime.
Suspected Paris attackers
- Salah Abdeslam, 26 - urgently sought by police
- Brahim Abdeslam, 31 - named as attacker who died near Bataclan concert hall
- Omar Ismail Mostefai, 29, from near Paris - died in attack on Bataclan
- Bilal Hadfi, 20 - named as attacker who died at Stade de France
- Ahmad al-Mohammad, 25, from Idlib, Syria - died at Stade de France (unverified)
- Samy Amimour, 28, from near Paris - suicide bomber at Bataclan
- Two other attackers died during the assaults in the city
As well as the attackers themselves, investigators are also reported to be focusing on a Belgian of Moroccan descent who is described as the possible mastermind of the attacks.
Abdelhamid Abaoud, 27, lived in the Molenbeek neighbourhood of Brussels, as did two of the attackers, and is now believed to be based in Syria, where he has risen through the ranks of IS.
What is Islamic State?
IS is a notoriously violent Islamist group which controls large parts of Syria and Iraq. It has declared its territory a caliphate - a state governed in accordance with Islamic law - under its leader Abu Bakr al-Baghdadi.What does it want?
IS demands allegiance from all Muslims, rejects national borders and seeks to expand its territory. It follows its own extreme version of Sunni Islam and regards non-believers as deserving of death.How strong is IS?
IS projects a powerful image, partly through propaganda and sheer brutality, and is the world's richest insurgent group. It has about 30,000 fighters but is facing daily bombing by a US-led multi-national coalition, which has vowed to destroy it.Source: BBC News
