A police officer patrols after gunfire in the Bataclan concert hall, Nov. 13, 2015, in Paris. According to reports, more than 150 people were killed in a series of bombings and shootings across the city, including at a soccer game at the Stade de France and a concert at the Bataclan theater. Antoine Antoniol/Getty Images

UPDATE 12:06 a.m. EST: Seven of the eight attackers died in suicide bombings, the Associated Press reported. There are up to 70 Americans unaccounted for following the attacks.

UPDATE 10:48 p.m. EST: At least eight assailants were killed, Agence France-Presse reported. A Paris prosecutor told news station France24 that 200 people were injured in the attacks, 80 of whom were in critical condition.

UPDATE 9:49 p.m. EST: The assailants are believed to have blew themselves up with suicide belts as police closed in on them during a raid of the Bataclan concert hall, the Associated Press reported.

The Paris police prefect said the attackers fired outside at nearby restaurants before going inside the music venue. Paris officials believe there were different sets of attackers involved. CNN reported that four attackers were killed at the music venue.

UPDATE 9:38 p.m. EST: All of the attackers are believed to be dead, the head of Paris police told the Associated Press. It was reported earlier that three were killed in a police raid of the Bataclan theater, where 200 people were held hostage.

UPDATE 9:16 p.m. EST: One member of the Los Angeles band Eagles of Death Metal was killed at the Bataclan concert hall in Paris, reported MSNBC.

UPDATE 8:39 p.m. EST: Five alleged assailants were "neutralized," but there may be attackers still at large, a French prosecutor told France Info. According to the local news outlet, six attacks took place in Paris: several explosions by the Stade de France, a hostage situation and shooting at the Bataclan theater, and two restaurant shootings, one in the 10th arrondissement and another in the 11th arrondissement. Other reports state that there were five attacks.

There were at least 153 people killed in the attacks, CNN reported.

UPDATE 8:20 p.m. EST: The death toll in the series of Paris attacks to grip the French capital is at least 149 people, CNN reported. About 1,500 soldiers have been deployed to the city, according to France24.

UPDATE 7:39 p.m. EST: At least 118 were killed in the carnage at the Bataclan concert hall in Paris, CNN reported.

UPDATE 7:31 p.m. EST: Three suspected assailants were killed in the police raid of the Paris concert hall, Agence France-Presse reported.

UPDATE 7:15 p.m. EST: About 100 people were killed in the hostage situation at the Bataclan concert hall, Agence France-Presse reported. There were about 200 people held hostage by the gunmen.

UPDATE 7:01 p.m. EST: The Associated Press reports the assault on Bataclan concert hall in Paris is over. Two attackers have been killed.

UPDATE 6:56 p.m. EST: At least 43 people involved in the series of attacks across Paris were killed, according to CNN. French reporter Julien Pearce was among the hostages at the Bataclan concert hall, where there are reports of executions. Pearce said he saw around 20 bodies on the floor of the theater.

UPDATE 6:36 p.m. EST: The Associated Press reported that loud bangs and gunfire could be heard from outside the Bataclan theater, where gunmen are holding 200 hostages. Some have been able to flee the theater, according to CNN.

Here is video footage from outside the Paris hostage scene at the concert hall:

UPDATE 6:08 p.m. EST: Hostages in the Bataclan concert hall are being killed "one by one," according to CNN. There are as many as 200 people held hostage inside the Paris concert hall with the gunmen, ABC News reported.

UPDATE 5:54 p.m. EST: French President Francois Hollande declared a state of emergency across the country. Borders were closed following the terrorist attacks in Paris on Friday.

President Barack Obama offered his support to the French people at a news conference Friday evening.

"Once again we've seen an outrageous attempt to terrorize innocent civilians," Obama said. "This is not an attack just on Paris. This is not an attack on all of France. This is an attack on all of humanity and the values we share."

Obama said that he plans to be in contact with Hollande in the next few days.

UPDATE 5:43 p.m. EST: Parisians use Twitter to offer shelter to those displaced by the attacks.

UPDATE: 5:21 p.m. EST: The death toll from the Paris attacks Friday evening has climbed to 30 people, according to France24.

Original Story:

Terror gripped Paris as simultaneous attacks unfolded Friday evening. Explosions, shootings and a hostage crisis caused havoc in the city, while French authorities scrambled to respond to four different scenes, reported CNN.

It is unclear who was behind the attacks Friday evening, and if they were linked. There were 60 people reportedly held hostages at Paris Bataclan concert hall, according to Agence France-Presse.

An explosion was reported near Stade de France, where the French national soccer team was playing against Germany's team, France24 reported. The explosions could be heard from the stadium.

There was also a shooting near a restaurant in the 10th arrondissement, reported local media.

The number of victims was unclear, with reports estimating anywhere from 2 to 18 dead, BBC reported.

Watch live footage from the scenes here.