ISIS has claimed responsibility for the attacks. In an online statement, the terror group said eight ISIS militants wearing explosive belts and armed with machine guns attacked precisely selected targets in the French capital.
Here is what we know so far about the attacks:
-Coordinated attacks took place in six locations in Paris, including a theater, the Stade de France, and at least two restaurants.
-The Paris Police Prefecture said the death toll is at least 128. The spokesman said 180 people had been injured, 99 of whom were in critical condition.
-Americans are among the injured, according to a statement from U.S. State Department Deputy Spokesperson Mark Toner: "The United States Embassy in Paris is working round the clock to assist American citizens affected by this tragedy. The U.S. government is working closely with French authorities to identify American victims. We are aware there are Americans among the injured, and are offering them the full range of consular assistance."
-Eight terrorists died, seven of them in suicide bombings. Police are searching for possible attackers who may have escaped.
-One of the attackers has been identified by fingerprints as a French national, a source close to the investigation tells CNN. He was known to police.
-A source close to the investigation tells CNN that officials found passports on two of the attackers. "One Syrian passport, One Egyptian passport," the source said. "There is strong assumption that these passports are fake," he said.
Where were the attacks?
Bataclan concert hall
-At least 112 people were killed here, according to the French interior ministry, though the Paris prosecutor said the number was "around 80."
Stade de France
-Four people were killed outside the sports stadium in Saint-Denis. France was playing Germany in a soccer match at the time.
-At least 14 people were killed at the site of a restaurant located on Rue Bichat.
-At least 19 people were killed outside a bar called La Belle Equipe on Rue de Charonne.
-Four people died on Avenue de la Republique.
-Pope Francis condemned the attacks as part of a "piecemeal Third World War."
-President Obama called the violence an "attack on all of humanity."
-Queen Elizabeth II and Prince Charles sent messages of sympathy to France.
-Russian leader Vladimir Putin sent condolences.
A man was arrested Saturday at London's Gatwick airport, Sussex Police said, after passengers saw a man discarding a "suspicious" item. Detective Superintendent Nick May said in a statement: "Given the events in Paris on Friday evening, there is heightened awareness around any such incident and it is best that we treat the matter in all seriousness."