MINNEAPOLIS -- Investigators say that a deadly fire at a Minneapolis duplex began on the second floor.
One person was killed and two others injured when fire broke out at 3317 Bryant Avenue South on September 14.
On Wednesday, the Minneapolis Arson Unit said the origin of the fire was a second floor porch. However, the cause of the fire is undetermined. Authorities define undetermined as "when cause cannot be proven to an acceptable level of certainty."
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