The Dallas police officer who killed a neighbor in a high-profile shooting is out of a job. Dallas police chief U. Renee Hall fired Amber Guyger, 30, during a hearing on Monday, reports Dallas News. Hall cited "adverse conduct." Guyger faces manslaughter charges in the Sept. 6 death of Botham Jean, 26. Guyger has told investigators that she thought she had entered her own apartment and mistook Jean, who lived a floor above her, for an intruder. Jean's family disputes her version of events, citing witnesses who say they heard pounding on the door before the gunshots, reports the Fort Worth Star-Telegram. Guyger, who is free on $300,000 bond, can appeal the firing. (More Dallas stories.)