Paris Attacks: 127 Dead After 'Terrorists' Using Suicide Vests Stage Multiple Attacks and Take Hostages

French President Francois Hollande said at least 127 were killed in a series of six attacks in Paris from Friday -- including shootings, explosions and a hostage situation at a concert hall

In a speech delivered Saturday, Hollande blamed ISIS for the attacks and called it an "act of war." He described it as an attack coordinated from outside with accomplices in France.

Three days of national mourning in France has been declared, according to the French president.

Eight attackers are dead and seven died detonating suicide vests, according to Agence France-Presse, citing police. The hostage situation at the theater, Bataclan concert hall, was over. A witness in the theater told ABC News she heard gunmen shout "Syria!"

French police said they believed all of the attackers involved in the shootings and bombings were dead, but authorities were searching for accomplices. 

According to the Paris Prefect, three of the attackers at the concert hall died when they detonated their suicide vests as police closed in. A fourth was found dead there. AFP said that three more attackers were dead outside the Stade de France soccer stadium and one on a street in eastern Paris.

Police said the attackers unleashed a hail of machine gunfire on cafes near the theater and then went inside the concert hall and killed more people before being confronted by officers.

The attacks took place at the theater, the Stade de France and four other locations in the 10th and 11th districts and led to dramatic security measures.

Police in Paris were recommending that residents avoid going out unless absolutely necessary and the subway system was shut down. All public buildings in Paris, including schools, museums, libraries and town halls, were closed indefinitely starting Saturday. The U.S. Embassy in Paris advises official U.S. personnel and citizens to shelter in place.

In the wake of the attacks, Hollande said he was imposing border checks and declaring a state of emergency. Anyone deemed dangerous could be placed under house arrest. Hollande called the attacks "unprecedented" and President Obama called them an attack "on all of humanity."

The two leaders shared a phone call on Friday evening where Obama expressed his condolences. "The President reiterated the United States' steadfast, unwavering support for the people of France, our oldest ally and friend, and reaffirmed the offer of any necessary support to the French investigation," the White House said.

Culled: ABC News