German prosecutors say they have arrested three Turkish men accused of spying on compatriots in Germany for Turkish intelligence.

The federal prosecutor's office said two of the suspects — identified in line with German privacy rules only as Taha G. and Goksel G. — were arrested Wednesday at Frankfurt airport. The third, Ahmet Duran Y., was arrested at his home in western Germany.

Prosecutors said in a statement Thursday that Taha G. is accused of running the other two as agents, and they collected information for him on Turks in Germany as well as their "organizational structures." They did not elaborate.

The three were ordered kept in custody pending a possible indictment.

Germany has a large minority of people of Turkish origin.