Most prolific murder partnership

According to Official Guinness Records,

The sisters Delfina and María de Jesús Gonzáles, of Mexico, abducted girls to work in brothels and are known to have murdered at least 90 of their victims. The sisters were sentenced to 40 years imprisonment in 1964

For a complete list of 1964 records, please visit 1964 Guinness Records in Mexico.

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