Pompey left Armenia under the military supervision of Afranius. Looking to take advantage of a defeated neighbour, Phraates III of Parthia invaded Armenia at Corduene and began pillaging. 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.