Armenian historian Faustus of Byzantium wrote that during an epoch of the upheavals which followed the intrusion of the Persians into Armenia (about 370), Artsakh was among the provinces risen in revolt, whereas Utik has been seized by the Caucasus Albanians. Armenian military commander Mushegh Mamikonian defeated Artsakh in a massive battle, took many inhabitants of the region prisoner and hostage, and imposed a tribute on the rest. In 372 Mushegh defeated the Caucasus Albanians, took Utik from them, and restored the border along the Kura, "as was earlier".