The Las Vegas Metropolitan Police are investigating two open homicide cases this year, both in the southwest valley. The most recent case involved a shooting near Dean Martin Drive and Starr Avenue, killing a woman and a toddler. The second open case involves the deaths of 31-year-old Briana Flowers and 31-yr-old Anfernee Pollard. The police have not yet identified a motive or suspects in these cases. Domestic violence remains the leading cause of homicides this year. The department maintains a homicide clearance rate in the high 90 percent range year after year.