Potential Michigan serial killer may have left behind valuable evidence, former FBI profiler says

A former FBI profiler warns that a potential serial killer in Michigan may have left behind valuable forensic evidence at outdoor crime scenes as authorities investigate whether five deaths in Lansing are connected.

Mary Ellen O'Toole told the "The Big Weekend Show" on Saturday that the killings posed risks for the offender because they occurred outdoors where the victims, all believed to have been homeless, were likely sleeping.

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