Islamic state claims responsibility for Paris attacks

In a statement issued online, Islamic State said that "eight brothers wearing explosive belts and carrying assault rifles" conducted a "blessed attack on... Crusader France."

It further says that ISIS released the claim in Arabic and French communiques and audios.

The terror attacks, worst in France's history since the second world war, were carried out in six locations, including  a concert hall, restaurants and the national sports stadium on Friday night.

French President Francois Hollande also blamed the Islamic extremist group and called the assault an "act of war".

. The Islamic State released an undated video on Saturday threatening to attack France if bombings of its fighters continue. Earlier, on Saturday, . Hollande said the attacks were committed by Islamic State, planned and organised from abroad with help from inside France.

At least eight militants, all wearing suicide vests, brought unprecedented violence. Four of them, armed with AK47s and shouting "Allahu Akbar," stormed into a rock concert at the Bataclan concert hal in eastern Paris, gunning down at least 82 people.

The gunmen were heard raging at Hollande and his decision in September to begin air strikes on Islamic State jihadists in Syria.

Three of the militants blew up their explosive belts as heavily armed anti-terror police raided the venues around 12.30 am (2330 GMT), while a fourth was shot dead.

Another attacker blew himself up in nearby Boulevard Voltaire.

At the Stade de France, the national stadium, three loud explosions were heard during the first half of a friendly international football match between France and Germany. At least five people died outside the venue which staged the 1998 World Cup final with several others seriously hurt.

French President Francois Hollande, who was watching the game, was immediately evacuated.

One of the explosions was near a McDonald's restaurant on the fringes of the stadium.

At least one of the two explosions in rue Jules-Rimet was a suicide bomb attack.

The match was eventually completed and the stadium emptied.

A little further east on Rue de Charonne 18 people were killed, with one witness saying a Japanese restaurant was the main target.

Rue Bichat, a little further north, was the scene of another attack as terrorists killed several people sitting inside Petit Cambodge restaurant and a bar.

A few hundred metres  from the Bataclan, the terrace of the Casa Nostra pizzeria was also targeted as five people were killed by attackers wielding automatic rifles, eye witnesses said.

Reports said attackers exploded his suicide vest on the Boulevard Voltaire, near the Bataclan. It is not yet known if there were any injuries from the explosion.

US President Barack Obama led a chorus of global condemnation, saying it was "an attack on all of humanity".

Obama is one of dozens of world leaders expected to attend key UN climate talks just outside the French capital from November 30.

Authorities had already tightened security at France's borders on Friday, hours ahead of the carnage in Paris.