 Complete the following phrase:  The Ethiopian Unity Patriots Front was founded by ethnic Nuer ex-officials of Mengistu Haile Mariams Derg regime. The rebel groups chairman, Thowath Pal Chay, was a ranking member of the Derg. He had served as Illubabor Provinces governor in the 1980s, the provinces security chief from 1981 to 1985, as Workers Party secretary between 1985 and 1987, and as First Secretary for Western Ethiopia as well as member of both the National Security Defense Council and the National Assembly from 1987. At the time, he forged links with the Sudan Peoples Liberation Movement SPLM, a separatist rebel group 