Update: 9:40 pm EST
The attackers at the concert hall, AP reports, blew themselves up with suicide belts as police closed in.
French President François Hollande declared a state of emergency nationwide and has closed national borders. It is the first time France has declared a state of emergency since 1944.
Update: 7:27 pm EST
AFP is reporting there are an estimated 100 casualties at the Paris concert hall.
Update: 6:57 pm EST
French media reports the hostage situation at the Paris concert hall is over and two attackers killed.
A gunman attacked a restaurant in Paris's 11th arrondissement on Friday night, according to multiple reports.
The AFP is additionally reporting hostages have been taken at the Paris Bataclan concert hall.
As The Daily Beast reports, the shooting began near a Cambodian restaurant.
There are dozens of casualties, with some social media users saying there are bodies on the streets.
Warning: Some may find these photos disturbing.
This video was reportedly taken inside the stadium during the bombing. At one point you can hear what is allegedly one of the bombs going off in the background:
The BBC is also reporting a second attack -- an explosion -- targeting a bar near Stade de France.
One employee of Toro Borracho, a restaurant near the scene, told Liberation, "We thought it was fireworks."
Another witness added,
I heard gunshots. I was not sure if it was firecrackers or gunshots. A car was parked in the middle of the street. It was in a bar at the corner of Rue de Charonne and Faidherbe. Two people came out. They had guns. I heard gunshots. Many shots. I felt they had firecrackers same time. It lasted at least three minutes. There was panic. Then they got back into the car. They went straight to the Charonne station.
According to The Telegraph, an anonymous caller phoned in a threat to the Hotel Molitor at 9:50 am, which prompted an evacuation of all hotel guests, including members of Germany's soccer team, who are playing in France today.
Editor's Note: This story is developing. Stay tuned for updates.