German prosecutors say they have arrested a suspected member of the Islamic State group.

The federal prosecutor's office said in a statement late Saturday that a 24-year-old man identified as Nils D. was arrested in Dinslaken in western Germany and his apartment was raided.

The suspect allegedly traveled to Syria in October in 2013 where he joined IS fighters. He returned to Germany in November 2014.

A local prosecutor in Duesseldorf had opened a separate terror investigation against the man in early 2014, but federal prosecutors said there was no indication that he was planning any concrete attacks. They also said his arrest was not related to the terror attacks in Paris.