sentences:  During this year, a group of prisoners taken at the fall of Dara 15 years earlier reportedly escaped from their prison in Khuzestan and fought their way back to Byzantine territory.In 589, the course of the war was abruptly transformed.In spring, the Byzantine pay dispute was settled, bringing an end to the mutiny, but Martyropolis fell to the Persians through the treachery of an officer named Sittas and Byzantine attempts to retake it failed, although the Byzantines won a battle at Sisauranon later in the year and managed to capture its commander, Bleschames.