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(NEWSER) – Police investigating the slayings of seven northwestern Indiana women whose bodies were found over the weekend say today they believe it is the work of a serial killer, and that the suspect indicates there could be more victims going back 20 years.

The Lake County prosecutor's office today charged 43-year-old Darren Vann of Gary, Indiana, in the strangulation death of 19-year-old Afrikka Hardy.Her body was found Friday night at a Motel 6 in nearby Hammond. Gary officials were expected to charge Vann later this week in the deaths of six more women, whose bodies were found over the weekend.

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