German prosecutors on Friday charged two Syrian men with membership in a terrorist organization on allegations they fought with a militant Islamist group in Syria.

Prosecutors said 24-year-old Kamel T.H.J. and 22-year-old Azad R. allegedly fought with the ultra-conservative Ahrar al-Sham against other rebel groups and Syrian government troops in the Aleppo area from at least August 2013 until April 2014, when the younger man was injured.

The two then traveled to Turkey together and then in 2015 onto Germany for the injured fighter to receive medical care.

Both suspects, whose names weren’t released in line with German privacy laws, were arrested in April and have been in custody since then.

Also on Friday, federal prosecutors announced the arrest of a 17-year-old Afghan citizen in Germany for alleged membership in a foreign terrorist organization.

Abdullah S.K., who was arrested Thursday, is suspected of joining the Taliban in Afghanistan and participating in weapons training and combat operations from 2013 to 2015, according to investigators.

The prosecutors’ statement alleged he fired shots at Afghan police officers and soldiers several times.

The statement did not say where in Germany he was arrested or how he came to be in the country.