November 3, 2008 – Madison, WI
A neighbor called 911 twice to report a loud fight at Lake Edge Park. Police were not dispatched
and Mark Johnson was killed.
Michael Voltz was jealous of the Johnson's relationship with his ex-girlfriend, Debra Tepp, who
was also at the park during the incident. He beat & kicked Johnson then left him to die.
Afterwards he, Tepp, and another friend Voltz had called, Kevin Harrolle, went to a tavern and
had a beer. Harrolle eventually went back to the park at about 11 p.m. and found Johnson
unresponsive. He had suffered severe facial injuries, about 15 rib fractures and tracheal bruises,
according to an autopsy, that concluded Johnson died from facial and skull injuries.
Dane County officials acknowledged that the center mishandled the calls
Mark Gregory Johnson (37)
Michael E. Voltz (46)
October 23, 2009
Voltz pleaded guilty to second-degree reckless homicide and was sentenced to nine years in prison
and 10 years extended supervision.