In late 1991, Syrian authorities arrested Nayyouf's wife and young daughter in a crackdown on members of the CDF in order to pressure Nayyouf to give himself up.[1] On 10 January 1992, Nayyouf surrendered to authorities.[4] After his arrest, Nayyouf was tortured at the Palestine Branch of Syrian Military Intelligence.[3] Many of Nayyouf's colleagues in the CDF were also arrested, and at least 17 were tried alongside Nayyouf by the Syrian Supreme State Security Court (SSSC) in proceedings lasting from 29 February to 27 March 1992.[1]