aden rebel former governor aden lead movement southern yemen secession say independence referendum would announce soon parliamentary body set administer territory aidaroos al-zubaidi sack aden governor president abd-rabbu mansour hadi set secessionist plan thousands supporters gather saturday yemen main southern city mark 54 years since october 1963 uprise british zubaidi previously declare council seek secession southern yemen say television interview late friday independence referendum would hold soon speak supporters saturday zubaidi say new 303-member parliamentary body national association would act like small parliament represent yemenis areas south zubaidi announce may new council form senior tribal military political figure council seek secession southern yemen look establish political leadership presidency would administer south move threaten turmoil impoverish arabian peninsular country internationally-recognized government force sit aden houthi rebel control capital sanaa council bear power struggle southerners president abd-rabbu mansour hadi undermine regional power saudi arabia efforts coordinate military campaign tehran-supported houthis hadi government reject formation council say would deepen divisions play hand houthi rebel many southerners feel officials north exploit resources cut job influence southern yemen leader see independence referendum parliament body