The investigation of a Bismarck man who was found dead under suspicious circumstances last year was closed after the Burleigh County Sheriff’s Department ruled the death accidental.
Florian Kiefer, 68, died of a head injury suffered in a fall, said Major Jim Hulm. The department closed the case after information obtained during the investigation and information from the North Dakota State Medical Examiner's Office indicated that Kiefer's death was accidental.
Kiefer was found dead at a Falconer Drive residence in south Bismarck on July 29, 2020. His wife called authorities about 7:15 a.m. Based on the initial findings at the scene and unexplained circumstances, deputies opened an investigation.
Hulm said the state medical examiner was specific in details about Kiefer's injury.
"This type of injury can't be from someone hitting you," Hulm said. "It's impossible."
Hulm at the time of Kiefer's death confirmed the department was looking into a person of interest but did not say who that person was. That person was ruled out as a suspect after deputies conducted interviews and investigated cellphone use from the night of Kiefer's death. The nearly yearlong investigation produced "no weapons, no suspects," Hulm said.
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Falconer Drive is south of the Bismarck Airport, north of the University of Mary and west of Highway 1804.