According to WikiLeaks' Gitmo Files, Diyab—the son of a Syrian father and an Argentinian mother—earned his living as a truck driver for many years in Syria. 
Kulingana na faili la Gitmo katika mtandao wa WikiLeaks, Diyab ni mwana wa baba wa ki-Syria na mama wa ki-Agentina aliyekuwa akijipatia kipato chake kwa kazi ya udereva wa malori kwa miaka mingi huko Syria.