Giovanni Ruiz had faced the death penalty and was set to go to trial later this month in the 2019 killing of 19-year-old Paula Davis.
A former police officer who pleaded guilty in a 1997 shooting death was sentenced Tuesday to between six and 15 years in prison.
A Las Vegas man accused of killing a woman, storing her body in a suitcase and raping another woman was sentenced Tuesday to between 16 and 40 years in prison.