ankara syrian opposition activist journalist daughter find murder apartment istanbul istanbul police department say friday body 60-year-old orouba barakat 22-year-old daughter halla find overnight apartment istanbul uskudar neighborhood asian side city turkish media report say orouba barakat investigate allege torture prisons run syrian government say initially live britain unite arab emirates come istanbul hand tyranny injustice assassinate sister doctor orouba daughter halla apartment istanbul orouba sister shaza write facebook add stab death orouba write headline first page pursue criminals expose name daughter name hala make first page headline shaza add since outbreak syrian civil war 2011 turkey become home almost three million syrian refugees many opponents regime president bashar al-assad syrian activist daughter murder istanbul home turkish police