Lawyer: Insanity plea considered in Marinette shootings - WKOW 27: Madison, WI Breaking News, Weather and Sports

Lawyer: Insanity plea considered in Marinette shootings

MARINETTE, Wis. (AP) -- The attorney for a Michigan man charged in a shooting rampage that killed three teenagers at a river on the Wisconsin-Michigan border says his client does not have a long history of diagnosed mental illness. 

Scott J. Johnson of Kingsford, Michigan, returns to court Friday to enter pleas to three counts of first-degree intentional homicide. 

Defense attorney Leonard Kachinsky says Johnson will plead not guilty and may also plead insanity. That decision has not yet been made. 

Kachinsky says the 38-year-old Johnson does not have an "extensive record" of hospitalization for psychiatric illnesses but he may suffer from undiagnosed depression. 

Prosecutors say Johnson went to the Menominee River on July 31 and opened fire on a group of swimmers, killing three and injuring one.

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