Islamic State registration forms include Paris attackers' information

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Identities of thousands of ISIS recruits leaked

List contains at least four Americans, 16 people from the UK

The names of several jihadis who carried out the Bataclan theatre massacre in Paris are documented in leaked Islamic State files, according to German media reports.

Among the thousands of IS registration papers were those of Samy Amimour, Foued Mohamed-Aggad and Omar Ismail Mostefai, said public broadcasters NDR and WDR, and newspaper Sueddeutsche Zeitung.

The three men killed 90 people at the Bataclan during a gig by rock band Eagles of Death Metal on 13 November last year.

Mostefai was a 29-year-old French national from a Paris suburb, Amimour, 28, was a former bus driver from the suburb of Drancy, and Mohamed-Aggad, 23, was from Strasbourg.

On their entry into IS-controlled territory in 2013 and 2014, they stated that they wanted to become fighters for IS, although on the personal information sheet there was an option to become a suicide bomber.

In addition, German reports said the files contain an apparent reference to Abdelhamid Abaaoud, who has been identified as the organizer of the Paris attacks.

Besides Abaaoud, French security authorities believe there was another man behind the Paris attacks, who is said to have been in Syria when they happened.

The German research team said it had now obtained data on several thousand IS members from a total of 22,000 documents, many of them duplicates, which were earlier obtained by Sky News.

The documents were given to Sky News by a disillusioned convert to the terror organisation.

German police said it has access to the same type of documents and considered them highly likely to be authentic, but some experts have voiced doubts or urged caution.

French Interior Minister Bernard Cazeneuve on Friday stressed the need to be "very careful" about the documents.

"We are extremely interested in information which would allow us to... neutralise terrorists but such information has to be authenticated," he said.

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