One of the venues attacked by terrorists of unknown origin was a concert hall, where an American band was playing. The Eagles of Death Metal was reportedly on the stage at the time of the attack.

Rolling Stone reports:

Shots rang out Friday night at Bataclan, a music venue in Paris where Eagles of Death Metal were playing, with several people dying and more than 100 people taken hostage as a result of the terrorist attack, according to ITV News.

Fifteen people have died at the club, according to The Associated Press, and hostage taking is underway. The New York Times reported that a witness told French television that someone shouted "Allahu Akbar," "God is greatest," as the shooting occurred. Police are ordering bystanders off the streets around the venue.

Reports state that the band members, which include singer Jesse Hughes and Queens of the Stone Age frontman Josh Homme, are safe. The wife of drummer Julian Dorio told The Washington Post that he and other band members are OK. "We are just holding our breath and saying prayers for everyone," Emily Dorio said. "[Julian] called to say that he loved me and he was safe. Everyone on stage was able to get off."

A Twitter user reported, though, that the group was onstage during the shooting. Rolling Stone has reached out to the group's reps for more information.

Update: KTLA just tweeted this:

From the band's official account:

According to news reports, security forces have entered the concert hall, killing two of the attackers.