RASS was set up by the SPLA-Nasir/United , almost immediately after the revolt inside the 1991 Sudan People 's Liberation Army against the leadership of Dr. John Garang . RASS remained closely tied to the SPLA-Nasir military structure and only worked in areas under the control of Riek Machar 's forces . RASS staff were generally former fighters and commanders of the movement . During its early phase , RASS was headed by Riek Gai Kok . Later , Timothy Tutlam took over as RASS director . He remained in this position until he died in the 1998 Sudan Air Force crash
1998 Sudan Air Force crash
1998 Sudan Air Force crash
Relief Association of Southern Sudan