Naya Rivera's final moments were heroic, police say. The 33-year-old actress' body was found in Lake Piru in Ventura County, California, on Monday, and during a news conference that afternoon, Ventura County Sheriff Bill Ayub shared what authorities believe led to Rivera's death.Ayub recounted what the star's 4-year-old son, Josey, whom she shares with ex-husband Ryan Dorsey, told police about the disappearance of his mom.