Judge: 2015 murder suspect not guilty, mentally ill

A file mug shot of Joseph Janssen.

KALAMAZOO, Mich. (WOOD) — A Kalamazoo County judge has found a man not guilty of murder by reason of mental illness.

Joseph Janssen, of Kalamazoo, was charged with open murder after 62-year-old Debra Jean died in June 2015.

Police discovered her body in her home on Edgemoor Avenue in Kalamazoo during a welfare check. They said she had died several days prior.