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(WBIR) An early morning fire broke out in an east Knoxville apartment Monday.

Knoxville firefighters responded apartments near the intersection of Parkview Avenue and Olive Street shortly before 5:45 a.m. Only one of the three units was occupied at the time of blaze, and everyone got out safely.

Authorities don't know what sparked the fire.

No word on the extent of the damage.

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