The investigators are hoping their American counterparts can provide some Internet data that will link Beate Zschäpe to the 10 murders the group is accused of. Zschäpe is in custody after turning herself in following the discovery of the cell in early November. Authorities have not been able to come up with any evidence linking Zschäpe to the murders.
German investigators are particularly interested in a Youtube account from Zschäpe in which she used the username "Liese1111". Investigators from the Federal Office of Criminal Investigation want to find out what Zschäpe viewed on that account and if she uploaded any videos to the site.
The Zwickau-based National Socialist Underground (NSU) was uncovered when Uwe Mundlos and Uwe Böhnhardt were found dead following an apparent murder-suicide after a botched bank robbery. Zschäpe turned herself in to police a few days later. Several others have since been arrested in connection with the group.
In addition to murders of nine immigrant shop owners and a policewoman, the group has also been accused of 14 bank robberies and two attacks involving explosives.
Zschäpe is in custody in Cologne. Her lawyers have filed an appeal for her release, saying there is not enough evidence linking her to any acts of terrorism.