The person at the center of this case
Walter A. Mosier
Homicide · Open
19 years waiting · since 2006
WALTER A. MOSIER - SENECA, MISSOURI
Justice for Walter A. Mosier — the trail went cold in 2006, but the truth hasn't.
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Key leads to think about
🔍
evidence
Lead #1What caused the blunt craniocerebral trauma and sharp force trauma to the neck and chest? Were weapons recovered?
⏰
timeline
Lead #2Where was Mosier between September 15, 2006 and March 15, 2007? How did his body end up near Sullivan?
👁️
witness
Lead #3Did anyone see Mosier after September 15, 2006 or observe suspicious activity near the Flying J Travel Center area?
Walter A. Mosier disappeared from Seneca, Missouri on September 15, 2006, and was found deceased six months later near Interstate 44 in Sullivan, Missouri. The medical examiner determined he died from homicidal violence including blunt force trauma to the head and sharp force trauma to the neck and chest. The Franklin County Sheriff's Office continues seeking information from anyone with knowledge of the victim or circumstances surrounding his death.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
🎯
suspect
Lead #4Who had contact with Mosier in the days before his disappearance and what was their relationship to him?
Have information about any of these leads?
Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
September 15, 2006 Seneca, Missouri On September 15, 2006, Walter A. Mosier was last seen in Seneca, Missouri.
On March 15, 2007, the skeletal remains of Mosier were located next to Interstate 44 and a quarter mile south of the Flying J Travel Center (truck stop) in Sullivan, Missouri. According to the medical examiner, Mosier had been deceased for approximately six months.
Mosier’s cause of death was identified as homicidal violence including blunt craniocerebral trauma and blunt sharp trauma of the neck and chest. Franklin County Sheriff’s office is seeking information from anyone who may have known the victim or may have information on this case.
Timeline of Events
👤
2006-09-15
Last Seen
Walter A. Mosier was last seen in Seneca, Missouri
🔍
2007-03-15
Remains Located
Skeletal remains of Mosier were located next to Interstate 44, approximately a quarter mile south of the Flying J Travel Center in Sullivan, Missouri
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:September 15, 2006
Last Updated:July 28, 2026
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Case Information
Incident:September 15, 2006
Last Updated:July 28, 2026