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Case Description
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Johanna J. JoJo Sierra, a 17-year-old girl from Dallas, Texas, tragically died on February 6, 2022. She was fatally shot multiple times outside her apartment on McCallum Boulevard by her boyfriend, Armando Diaz Jr., who was 19 years old at the time. The couple had been arguing, and Diaz, who was intoxicated, shot JoJo 10 times with a modified fully automatic .45 Glock pistol. Despite the efforts of the first responding officer, JoJo died at the scene.
Diaz fled the scene but turned himsel ...Read More
Diaz fled the scene but turned himsel ...Read More
Links to Additional Sources (3)
See any mistakes?Victim Details
Johanna J. JoJo Sierra
Female
Dallas
TX
2022-02-06
17
Johanna
J. JoJo Sierra
11/14/2025







