serial killers remains a mystery - 43 years after his horrific crimes were committed.Child murderer and rapist Pedro Lopez, known as "The Monster of the Andes", targeted young girls between the ages of 8 and 12 in Colombia in the 1970s.He was arrested in 1980 and convicted of killing 110 people, but confessed to the murder of as many as 350 - and has been linked to at least one other killing following his release.Lopez said he was killing three young girls a week in his native country, Preu and Ecuador at the height of his depraved spree of serial killings.He had started his murderous spree in 1969 following a stint in prison for car theft.His first attack was on two men who he claimed had raped him while he was in prison.Lopez killed his.
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