 According to historian Cassius Dio (XXXVII, 5), Afranius retook the district without a conflict with Phraates' forces.However, Plutarch ("Pompey" 36) asserts that Afranius marched against the Parthians, drove them out of Armenia, and pursued them as far as the district of Arbela (modern Erbil, Iraq) within the borders of the Parthian Empire.After his second victory over Mithradates, Pompey realised that pursuing him was futile and instead invested forces to defend Pontus from Mithradates' return.