The names of the jihadis who attacked Paris last November are included in thousands of Islamic State documents that have been leaked to news organisations in the UK, Germany and Syria.
The person who leaked them is said to be a disillusioned convert to the terrorist group.
It is reported the documents include the names of around 22,000 IS recruits.
They include the details of three of the men who carried out the Bataclan theatre attack, in which 90 people died.