NEW : Scholars say defendants are scapegoats in effort to build credibility , maintain order . Comment: Fars : Enough evidence exists to prosecute 12 officials from Tehran 's Kahrizak prison . Officials initially said protesters died of meningitis ; coroner found they died after severe beating .
NEW : Scholars say defendants are scapegoats in effort to build credibility , maintain order . Three charged with murder in beating deaths of protesters imprisoned after election . Fars : Enough evidence exists to prosecute 12 officials from Tehran 's Kahrizak prison . Officials initially said protesters died of meningitis ; coroner found they died after severe beating .