Saudi : Khalid al - Faleh detained for six months without charge . He was released from a prison near Baghdad late Saturday , the activist says . Rights group : Al - Faleh 's detention came after he protested prison conditions .
Saudi professor Matrook al-Faleh imprisoned for eight months without charge . He was released from a prison near Riyadh late Saturday , fellow activist says . Rights group : Al-Faleh 's detention came after he criticized prison conditions .