Following this period, the region of Mesopotamia seems to have come under the sway of a Sumerian conqueror from Adab, Lugal-Ane-mundu, ruling over Uruk, Ur, and Lagash. According to inscriptions, he ruled from the Persian Gulf to the Mediterranean, and up to the Zagros Mountains, including Elam. However, his empire fell apart with his death; the king-list indicates that Mari in Upper Mesopotamia was the next city to hold the hegemony.