Tukulti-Ninip, however, was not a popular emperor even in his own country. He offended national susceptibilities by showing preference for Babylonia, and founding a new city which has not been located. There he built a great palace and a temple for Ashur and his pantheon. He called the city after himself, Kar-Tukulti-Ninip[412]. Seven years after the conquest of Babylonia revolts broke out against the emperor in Assyria and Babylonia, and he was murdered in his palace, which had been besieged and captured by an army headed by his own son, Ashur-natsir-pal I, who succeeded him. The Babylonian nobles meantime drove the Assyrian garrisons from their cities, and set on the throne the Kassite prince Adad-shum-utsur. Thus in a brief space went to pieces the old Assyrian Empire, which, at the close of Tukulti-Ninip's thirty years' reign, embraced the whole Tigro-Euphrates valley from the borders of Armenia to the Persian Gulf. An obscure century followed, during which Assyria was raided by its enemies and broken up into petty States. The Elamites were not slow to take advantage of the state of anarchy which prevailed in Babylonia during the closing years of Assyrian rule. They overran a part of ancient Sumer, and captured Nippur, where they slew a large number of inhabitants and captured many prisoners. On a subsequent occasion they pillaged Isin. When, however, the Babylonian king had cleared his country of the Assyrians, he attacked the Elamites and drove them across the frontier. Nothing is known regarding the reign of the parricide Ashur-natsir-pal I of Assyria. He was succeeded by Ninip-Tukulti-Ashur and Adad-shum-lishir, who either reigned concurrently or were father and son. After a brief period these were displaced by another two rulers, Ashur-nirari III and Nabu-dan. It is not clear why Ninip-Tukulti-Ashur was deposed. Perhaps he was an ally of Adad-shum-utsur, the Babylonian king, and was unpopular on that account. He journeyed to Babylon on one occasion, carrying with him the statue of Merodach, but did not return. Perhaps he fled from the rebels. At any rate Adad-shum-utsur was asked to send him back, by an Assyrian dignitary who was probably Ashur-nirari III. The king of Babylon refused this request, nor would he give official recognition to the new ruler or rulers. Soon afterwards another usurper, Bel-kudur-utsur, led an Assyrian army against the Babylonians, but was slain in battle. He was succeeded by Ninip-apil-esharia, who led his forces back to Asshur, followed by Adad-shum-utsur. The city was besieged but not captured by the Babylonian army.