(Las Vegas, NV) — New information is emerging about the man accused in the valley’s first homicide of the new year. 29-year-old David Monarrez was arrested yesterday in Sunday’s slaying of his 58-year-old aunt. Her body was found Sunday at a home near Maryland Parkway and Oakey. Family members tell KLAS-TV a fight between the two ended in the shooting death of the bi-polar woman. They say Monarrez is mentally unstable.