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Paris Rocked By Shootings And Explosions -- UPDATED

France's President François Hollande called the attacks which claimed the lives of over 100 people Friday night an 'act of war.'

UPDATE (11/14/15, 4:47 p.m. ET): French officials say three teams of terrorists organized and carried out the attacks, according to The New York Times. All were armed with guns and suicide vests, and one of the gunmen may have traveled to Europe with a Syrian passport in the stream of migrants that entered the continent. The latest numbers report 129 dead and 352 injured, 99 critically.

Belgian officials have reported three arrested related to Friday's attacks. German police were following up on an arrest they made last week to see if it is connected at all.

French President François Hollande has declared three days of national mourning. The country is still under a state of emergency.

UPDATE (11/14/15, 1:30 p.m. ET): In a statement Saturday (Nov. 14), French President François Hollande stated that the series of attacks which claimed the lives of a reported 129 victims and injured 352 others, many of whom are in critical condition, was an "act of war that was committed by a terrorist army." 89 of the deaths took place inside of the Bataclan concert hall where hostages were taken after the venue.

The Islamic State, also known as ISIS or ISIL, has publicly claimed responsibility for Friday's Parisian attacks, calling it "the first of the storm." Eight attackers have been killed.

President Hollande has declared three days of national mourning for the victims, while several popular tourist locations -- including the Louvre and the Eiffel Tower -- are temporarily closed.

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UPDATE (11/13/15, 9:07 p.m. ET): French police have now confirmed at least 153 people were killed in the Paris and Saint-Denis shootings and bombings, with 112 killed at the Bataclan concert, according to the Interior Ministry.

UPDATE (11/13/15, 7:30 p.m. ET): French police have now confirmed that the three suspected attackers who took hostages at the Bataclan concert venue have been killed after police stormed the hall. It is not known at this time how many of those hostages, if any, have been rescued, but French police estimate the number of people killed in the Paris concert venue attack to be at least 100.

UPDATE (11/13/15, 6:30 p.m. ET): French police have now confirmed that there were two suicide attacks and one bombing near the State de France sports stadium.

Parisians have also launched the hashtag #PorteOuverte (which translates to #OpenDoor in English) as a means of offering shelter to those people who are stranded outside in Paris.

UPDATE (11/13/15, 6:18 p.m. ET): President François Hollande has now declared a national state of emergency and shut down France's borders.

In a statement, he said, "This is a terrible test, another assault on France. We must, in these difficult moments, prove our our compassion and unity. Faced with terrorism, France must above all be strong. Each of us has a personal responsibility. There is much to fear, but facing these fears is a nation that knows how to muster its forces and will confront the terrorists."

UPDATE (11/13/15, 5:45 p.m. ET): In a statement, President Obama called this attack “not just an attack on Paris [but] an attack on all of humanity.” He referred to France as “our oldest ally” and assured all that “we stand together with them in the fight against terrorism and extremism.”

President Obama has not spoken with French President François Hollande, but assures the U.S. will "do whatever it takes to work with the French people and nations around the world to bring these terrorists to justice and to go after any terrorist networks that go after our people."

PREVIOUSLY (11/13/15 5:30 p.m. ET): The city of Paris, France came under attack on Friday (Nov. 13) as shootings broke out in the city's 10th and 11th Arrondissements and two explosions near the State de France sports stadium where the France-Germany soccer match was underway led to the evacuation of President François Hollande, according to The New York Times.

The Associated Press reports that at least 35 people have been killed during the shootings -- 11 from a shooting at Paris restaurant in the 10th Arrondissement, and 15 in the Bataclan theater, at which hostages have also reportedly been captured.

One estimate claims that 100 hostages have been taken in the theater, while the number of those killed may be between 35 and 40 victims.

The location of the shootings is also reportedly near the former headquarters of Charlie Hebdo, the newspaper which came under fire in January, per New York Times.

Stay tuned for updates as this story develops.