In November 2012, Mustafa K., Abdullah K., Sultan K., and Ahmed K. allegedly joined Jabhat al-Nusra (rebellious terrorist group) in Syria and fought against Syrian government troops in the city of Ras al-Ayn in northern Syria. Mustafa K., Sultan K., and other Jabhat al-Nusra members reportedly captured an official of the regime of Bashar al-Assad and forced his family to leave the city while plundering their possessions. The governmental official was found dead later.
In addition, alongside other Jabhat al-Nusra members, Ahmed K. is accused of threatening and thereby forcing the Kurdish population to leave the city. Indeed, the northwestern part of Ras al-Ayn was mostly inhabited by Kurds. Furthermore, Sultan K. and Abdullah K. allegedly took part in the hostilities against the Kurdish People’s Protection Units (YPG).