In the early morning hours of November 8, 2025, the life of 17-year-old Rhiana Kemplin was tragically cut short in her Avondale, Arizona, apartment. A senior at Agua Fria High School, Rhiana was known by friends for her vibrant and unapologetic personality. She was a dedicated member of the school's marching band, where she played the marimba, and had dreams of attending cosmetology school to pursue her passion for makeup, piercings, and tattoos.
Friends and family remembered her as a warm, loyal, and protective individual whose laughter and kindness brightened any room.
The quiet of the Kemplin home was shattered when Rhiana's mother was awakened by the sound of her bedroom door being forced open. She was confronted by a male figure dressed in dark clothing with his face masked, who pointed a firearm at her and pulled the trigger twice. The gun malfunctioned, only clicking, and the intruder fled the apartment. In the ensuing chaos, Rhiana's mother discovered her daughter in her bed, gravely wounded from a gunshot to the head. Authorities were called, and Rhiana was rushed to a hospital where she was declared brain dead and later succumbed to her injuries. Evidence suggested she sustained a defensive wound to her hand, indicating a desperate attempt to protect herself.
The investigation quickly focused on Rhiana's 18-year-old ex-boyfriend, Emilio Andres Rivera. Rhiana's mother identified him as the likely suspect to the police. During questioning, Rivera admitted to being at Rhiana's apartment on the night of the murder, where they had gotten into an argument after he went through her phone. He also confessed to returning to the apartment complex multiple times that night to slash the tires of 14 vehicles, including those he believed belonged to people Rhiana might visit, in an attempt to prevent her from seeing other men. He initially denied any involvement in the shooting.
Initially arrested on charges of criminal damage, Rivera was publicly named a "person of interest" in Rhiana's murder. The investigation intensified, and a search of Rivera's home uncovered a handgun belonging to his mother and a black ski mask. Ballistics testing confirmed that the firearm found at his residence was the weapon used to kill Rhiana, matching a shell casing found in her bedroom. With this evidence, Avondale police arrested Rivera and charged him with one count of first-degree murder for Rhiana's death and one count of attempted second-degree murder for the attempt on her mother's life. He was booked into the Maricopa County jail and held on a $1 million cash bond.
