German prosecutors charge Turkish/German 22-year-old with Islamic State membership, murder

German prosecutors say they've charged a 22-year-old German-Turkish dual national with murder and membership in a terrorist organization on allegations he fought with the radical Islamic State group in Syria.

Prosecutors said Tuesday that Kerim Marc B., whose last name wasn't given in accordance with German privacy laws, is alleged to have joined the Islamic State group after traveling to Syria via Turkey in 2013.

They say he received military training in Syria and fought in multiple engagements, "killing at least one person."

Prosecutors say he temporarily returned to Germany in early 2014, went back to Syria last July and resumed fighting.

He was arrested in Turkey in January and sent back to Germany in March and was taken into custody at Duesseldorf airport.