JANESVILLE, Wis. (WTAQ) - A state forensic scientist said a murder scene in Janesville looked like it was staged. Defendant James Koepp claims that somebody else committed a robbery while looking for prescription drugs, and that person killed Danyetta Lentz and her teenagers Nicole and Scott. But prosecutors say Koepp tried to make it look that way. And Wednesday, state analyst Nick Stahlke testified the bodies were re-positioned after they were stabbed and strangled to death. Stahlke said blood patterns proved that they were moved.
The 50-year-old Koepp was a neighbor of the Lentzes. And his attorneys said he was at their mobile home on the night of the killings only to talk about an affair he had with Danyetta Lentz. The slayings occurred in January of 2007. It took almost a year for prosecutors to obtain evidence before filing charges. Koepp’s homicide trial began Monday in Rock County, and is scheduled to last for another week-and-a-half. He’s already been convicted in a high-speed car chase a few days after the slayings. Koepp is serving 4 years in prison for that.