Manchester, N.H. – New Hampshire State Police are renewing calls for information in the 1993 homicide of Diethelm Baumann, an unsolved case drawing continued investigative attention 33 years later.
According to New Hampshire State Police, Manchester officers were called on Friday, Feb. 26, 1993, to the rear of the Lafayette Club on Canal Street for a reported shooting. Upon arrival, officers found Baumann, 30, suffering from a gunshot wound to the face. He was pronounced dead at the scene.
Authorities said an extensive investigation spanning several months followed the killing. Police identified a suspect based on a description provided by a female companion of the victim. The suspect was described as a white male with dark hair and a mustache, allegedly last seen driving a pickup truck.
Despite investigative efforts, the case remains unsolved.
State police are asking anyone with information to contact the Cold Case Unit. Tips can be submitted through the New Hampshire Department of Safety Cold Case portal or by email.
The renewed appeal underscores ongoing efforts to resolve long-standing cases and provide closure to families. The case may also resonate with younger residents who were not yet born at the time of the shooting but now live or work near the downtown Canal Street corridor.
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