Kwong Kau, 67, is a former Hong Kong police sergeant, having retired in 2005 after receiving a long service medal in 2001. His police career reportedly concluded amidst an uncharged sexual assault allegation. Currently, he faces legal proceedings related to the murder of Abby Choi Tin-fung. Authorities allege he orchestrated the crime, driven by a property dispute, and was responsible for renting the premises where Choi’s remains were discovered. His background suggests a past in law enforcement, now overshadowed by his alleged central role in this high-profile criminal case.