The sentence against Yoset Dominguez-Serrano was imposed by Judge Richard Bartheld in Yakima County Superior Court. He pleaded guilty to first-degree murder.
The victim, 24-year-old Antonio Hernandez-Ledezma of Oregon, was shot in the back of the head at close range in February 2015. His body was later found in the Lower Valley.
At the time, Hernandez-Ledezma was wanted by police for allegedly impregnating Dominguez-Serranos 13-year-old relative.
Bartheld noted Dominguez-Serrano's claim to detectives that he killed Hernandez-Ledezma to protect the honor of his family.
However, Bartheld emphasized that Dominguez-Serrano had no right to appoint himself as "judge, jury and executioner" in the case.