Alonso Ríos Mairena
Alonso Ríos Mairena, infamously dubbed the 'Monstruo de Liberia,' is a convicted murderer who gained notoriety for the brutal killings of five university students in Costa Rica. His heinous crimes led to a 216-year prison sentence, marking him as one of the most infamous criminals in the nation's history.
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Costa Rica:
Alonso Ríos Mairena, known as the Monstruo de Liberia, was sentenced to 216 years in prison for the murder of five university students.
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