Turkey has extradited a 28-year-old German national to his homeland on a charge of joining an international Islamist terrorist group, federal prosecutors in Karlsruhe said Wednesday, DPA reported.
Investigators believe the man, named only as Salih S, was a full member of the Islamic Jihad Union (IJU) from May 2007 onwards after training in the Pakistan region of Waziristan on the Afghan border.
He is likely to be formally indicted soon.
Germany has tried a series of radical homegrown young Muslims, often of Turkish ancestry, who have learned skills with militant groups in Waziristan and joined in attacks on NATO troops in Afghanistan.
Turkey arrested S last November 18, but bailed him between February and June.
He was then re-arrested and arrived in Germany on Tuesday, where he was formally remanded in custody.
He will also be accused of assisting the IJU in the period November 2006 to March 2007 before actually joining it, the prosecutors said.
The assistance included obtaining paramilitary supplies such as three satnav devices and a rifle night-sight and donating money, they said.
Investigators will argue that he became a member of the IJU when he swore an oath of loyalty at the end of his training in guerrilla warfare.