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Missing

Mark Zimmerman

Year
2003
Where
Round Lake, Illinois
Source
NamUs
Evidence
1
What the record says

Mark Zimmerman, 41 at the time, was last known to be in Round Lake, Illinois on May 1, 2003. NamUs case MP40045.

Basic facts from the NamUs public record. Records change. The source is the authority.

Where to start

Got ten minutes? Do one of these.

What is the last confirmed sighting, and what is the documented timeline around it?

  • Pin down the last confirmed sighting: who saw them, where, and when.
  • Build the 48 hours before and after from what is on the record.
  • Check for unidentified persons found in the region after that date.

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