In the spring of 330 B.C. he resumed the pursuit of Darius, who was still at Ekbatana making vain efforts to raise another army. The fallen monarch, on hearing that the enemy was again moving against him and had reached Media, fled eastward hoping to find protection and safety in the far remote province of Baktria, of which his kinsman Bessos was the satrap. The capital which he had left was the summer residence of the Persian kings, and was noted for the enormous strength of its citadel. Alexander therefore ordered Parmeniôn to transport thither, as to a place of peculiar security, the treasures which had been seized at the other capitals, and to confide their custody to a strong guard of Macedonian soldiers.[17] This done, he set out with a light detachment of troops in the hope of overtaking the fugitive king before he passed through the Kaspian Gates. At Rhagai, which was a day’s rapid march from that pass, he learned that Darius had escaped beyond it, and he therefore halted for five days to recruit his troops. On renewing the pursuit and reaching the open country beyond the gates, he learned that the Persian officers who were escorting their sovereign had conspired against him and deprived him of his liberty. Greatly fearing now lest the traitors had some deadlier purpose in view, he made incredible exertions to overtake them, and he came up with them on the fourth day—but all too late. The conspirators, among whom was Bessos, finding that the pursuit was gaining upon them, mortally wounded the hapless king, who breathed his last before Alexander reached him. “Such,” says Arrian, “was the end of Darius, who as a warrior was singularly remiss and injudicious. In other respects his character is blameless, either because he was just by nature, or because he had no opportunity of displaying the contrary, as his accession and the Macedonian invasion were simultaneous. It was not in his power, therefore, to oppress his subjects, as his danger was greater than theirs. His reign was one unbroken series of disasters, and he was at last treacherously assassinated by his most intimate connections. At his death he was about fifty years old.” Alexander sent his body into Persia with orders that it should be buried with all due honours in the royal sepulchre. Bessos escaped into his own satrapy where he assumed the upright tiara, the distinguishing emblem of Persian royalty, and took the name of Artaxerxes.