According to Missouri Department of Corrections authorities, an Excelsior Springs man serving a life sentence for murder died suspiciously Saturday afternoon. An autopsy will be performed on 32-year-old Erik Zimmerman’s body to determine the cause of death. A State Judge ordered Zimmerman to serve a life sentence after he pleaded guilty for second degree murder, armed criminal action and knowingly burning and exploding. Zimmerman admitted to kidnapping and killing a young Ray County woman in late 2009 in a drug deal gone wrong. He was placed in the Crossroads Correctional Center in February.