Medford, Ore. -- Medford police are investigating an unusual case tonight.
Police say a resident on the 800 block of Oak street went home yesterday after being gone for several days and found someone else had been living in the house.
As the homeowner called police, the unwanted tenant came back.
The victim tried to detain the suspect but was threatened with a knife, and ran off.
Police say they have found some evidence and are continuing their investigation.
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