Nexus was technically an unclaimed system since its discovery, even though UEE-based mining consortiums descended on the planets to claim their resources. After the discovery of jump points into neighboring lawless systems, a criminal element moved in. Following Kellar's Run, and the discovery of a new source of minerals in its asteroid belt in SEY 2931, the UEE began to reassert its authority in the system, claiming it as part of the Empire and uprooting the criminals that were living there. These criminals haven't left quietly, a battle for control of the system is still actively being waged.