Shaas al-M. joined ISIS in his Syrian home village in mid-2013 (File photo)
German prosecutors say a 19-year-old Syrian migrant scouted out potential sites in Berlin for an attack by the ISIS group.
Federal prosecutors say the teenager, identified only as Shaas al-M. in keeping with German privacy rules, also recruited at least one person to fight in Syria.
They allege he offered to act as a middle-man for ISIS members carrying out an attack in Germany and signaled his willingness to participate in an attack.
Prosecutors said in a statement on Thursday that Shaas al-M. joined ISIS in his Syrian home village in mid-2013. He underwent military training and performed guard duties for the group before leaving for Germany in mid-2015.
The suspect was arrested March 22 and charged last week with membership of a foreign terrorist organization and breaking arms control laws.