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'Worst serial killer' ID exposes shady South Korean police methods

Confession casts doubts on conviction of man who served 20 years for slaying

South Korean police have pledged to make amends to a man who served 20 years in prison for a crime he apparently did not commit.  (Yonhap/Kyodo)

SEOUL -- South Korean police are facing mounting criticism after identifying a suspect in one of the nation's gravest cold cases, with the development calling into question an earlier conviction's reliability.

The suspect, thought to be the culprit behind South Korea's most infamous unsolved serial killings which have been investigated for 33 years, was identified using DNA analysis.

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