This report says: “France 24 reports that gunmen at the heavy metal concert by Eagles of Death Metal at the Bataclan concert hall have opened fire on the audience. It says the hall holds some 1,500 people. Benjamin Cazenove, injured and trapped in the theater, says gunmen are killing people ‘one by one,’ France 24 reports, citing a Facebook post. ‘It is a scene of carnage,’ he says. There are still some 60-100 people inside, the TV report says.”
“Paris Police Launch Assault On Concert Hall,” SkyNews, November 13, 2015:
Police have launched an assault on the Bataclan concert hall in central Paris where at least 100 hostages are being held….
Earlier, police officials said at least 15 people had been killed inside the building in the 11th arrondissement.
Two armed men are believed to be inside, according to unconfirmed reports.