On Friday, Nov. 13, 2015, at 9:00 p.m CET (3:00 p.m EST) three separate groups of terrorists staged attacks in six different public locations in Paris, France. During the attacks, an estimated 129 people were killed, and about 352 were injured, 99 of whom are considered to be in serious condition.

After the events, the terror group ISIS claimed responsibility for the attacks.

The President of France, François Hollande noted the attacks as “an act of war.” According to CNN, it was the worst and deadliest attack in Europe since 2004 when the bombing of trains in Madrid, Spain, resulted in the deaths of 191 civilians.

Six locations were targeted by the terrorist groups. The Bataclan Concert Hall, where citizens were expecting to see a show performed by the American rock band Eagles of Death Metal, was invaded by three terrorists with assault rifles. Upon entering, they took victims hostage and killed 89 people. Upon police invasion in a rescue operation, two of the terrorists killed themselves with suicide belts and the other one was shot and killed by a French officer.

The second location was the Stade de France, a sports stadium in Saint-Denis, just north of Paris. At the time, France’s and Germany’s soccer teams were facing off in an International Friendly, four men were killed. Three of these men were suicide bombers, and one was, unfortunately, a French citizen that happened to be walking by at the time.

The other four locations consisted of restaurants, bars, and cafes in the city. Fifteen people were killed just outside a Cambodian restaurant called Le Petit Cambodge and a bar named Le Carillon, which are both situated near the Canal Saint Martin. Just minutes after, an additional five lives were taken by these terrorists outside the neighboring Cafe Bonne Biere, and at a restaurant named La Belle Equipe, 19 more people were killed. All six locations were attacked within a period of only 15 minutes.

As a result of these attacks, President Hollande has declared a state of emergency and has heavily secured French borders to prevent any terrorists from leaving, and any new ones from coming into the country. Security forces have also increased drastically throughout all of France, not just in Paris.

Very few victims have been identified. However, Valentin Ribet, a Parisian lawyer, Nohemi Gonzalez, a 23 year-old student from California, British citizen Nick Alexander, and three Chilean citizens named Patricia San Martin, Elsa Veronique Delplace San Martin, and Luis Felipe Zschoche Valle are among the innocent men and women who have lost their lives.

Around the globe, world leaders are reacting to this tragedy by sending condolences to France and ensuring the safety of their countries, and additionally, monuments all over the world are lighting up blue, white, and red in solidarity with France.

British Prime Minister David Cameron has said that the threat level in the United Kingdom is “severe” and the Netherlands has been constantly increasing border security.