UPDATE: Day 2 of James Koepp murder trial - WKOW 27: Madison, WI Breaking News, Weather and Sports

UPDATE: Day 2 of James Koepp murder trial

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James Koepp / Tuesday James Koepp / Tuesday

ROCK COUNTY (WKOW) -- Testimony on the second day of the James Koepp murder trial described a brutal killing.

"These stab wounds to the chest resulted in rib fractures," said Pathologist Michael Stier as he described the stab wounds on Danyetta Lentz's body.

He also described evidence that showed Lentz fought for her life.

"The stabs on the left arm may represent defense wounds," Stier said.

Autopsy results showed all three victims, Lentz and her two teenage kids, Nicole and Scott were strangled and stabbed to death.

Testimony stated some of those stab wounds came after the victims were already dead.

Jurors saw evidence including one of the alleged murder weapons, a scarf found tied around Danyetta Lentz's neck and the blood stained clothes Koepp wore the day of the crime.

But Koepp's attorneys criticized forensic investigators for neglecting some items like a blood soaked mattress.

They say key evidence may have been lost.

"One big chunk of evidence is whose blood is on the matters," said defense attorney Walter Isaacson.

 Investigators argue that evidence found around the bodies were enough.

Autopsy results show at least three weapons were used, a scarf, a bread knife and another knife or sharp object.

Keopp is charged with three counts of intentional homicide.

His trial is expected to last 12 days.

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ROCK COUNTY (WKOW) -- Pathologist Michael Stier said 14-year-old Scott and 17-year-old Nicole were also strangled and stabbed to death. 3:02pm

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ROCK COUNTY (WKOW) -- Pathologist Michael Stier said during the autopsy he determined that Danyetta Lentz sustained "a violent unnecessary death."

Stier said markings left by a scarf tied around Lentz's neck determine she was strangled.

He added that there were multiple stab wounds on Lentz's body. 12 on the chest area alone.

Stier said some of those came after Lentz's death.

The pathologist also said some wounds on the body determined that Lentz was "fighting to save her life."

Stier conducted the autopsy of murder victims Danyetta Lentz and her two teenage kids Nicole and Scott.

He is currently on the stand being questioned by the prosecution in the murder trial of James Koepp.

Koepp is accused of killing the Lentz family in 2007.

2:13 am

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ROCK COUNTY (WKOW) -- Accused killer James Koepp's lawyer said the state's forensic scientist could have lost key evidence in his investigation.

Koepp's attorney, Walter Isaacson criticized Forensic Scientist Nick Sahlke for not testing other areas where blood was found. That includes blood on victim Danyetta Lentz's mattress and the carpet of the trailer home.

Isaacson also questioned why forensics did not use black or UV lights to find evidence "not seen under regular light."

Sahlke said examining blood on areas like the mattress or carpet were not necessary because of "similar" evidence collected on other items in the bedroom and near the bodies. He added collecting every

item at a crime scene won't give any additional information. Sahlke also said black light was not necessary and that white or regular light was better for finding blood.

Sahlke presented evidence in the murder trial of James Koepp who is charged with three counts of intentional homicide in the deaths of Danyetta Lentz and her two teenage kids in 2007.

The trial is expected to last 12 days.

Stay with WKOWTV.com for more updates

Online reporting by Brian Rodriguez at 11:55 am

Email Brian at brodriguez@wkowtv.com

Follow Brian on Twitter @Brodriguez_wkow

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ROCK COUNTY (WKOW) -- Day two of the Koepp murder trial continued with forensic evidence collected at the scene of the crime in Janesville back in January 2007.

Forensic Scientist Nick Sahlke described items that include the blood stained clothes that prosecutors say James Koepp wore the day of the murders.

Sahlke also spoke about how evidence at the scene determined that some of the stab wounds on Danyetta Lentz's body happened after she died. He would not say who the blood belonged to.

Sahlke added that it appeared the bodies of 17-year-old Nicole and 14-year-old Scott Lentz were moved by someone that could have been wearing a glove or sock.

He also said it appeared a chair was placed over Scott Lentz's body.

Koepp is charged with three counts of first degree homicide in the deaths of Danyetta Lentz and her two teenage kids Nicole and Scott.

Stay with WKOWTV.com for more updates

Online reporting by Brian Rodriguez at 10:30 am

Email Brian at brodriguez@wkowtv.com

Follow Brian on Twitter @Brodriguez_wkow

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ROCK COUNTY (WKOW) -- More witness testimony is expected on the second day of the James Koepp murder trial.

Koepp is charged with three counts of intentional homicide in the deaths of Danyetta Lentz and her two teenage kids back in January 2007.

In opening statements Tuesday, prosecutors say Danyetta Lentz's DNA was found on the clothes Koepp wore the day of the murders.

Koepp's attorneys say his DNA was not on the alleged murder weapons.

Tuesday we heard from Lentz's father, Russell Lucht, who testified about finding the bodies of his family.

Stay with WKOWTV.com for more updates on today's witness testimony from the courtroom.

Online reporting by Brian Rodriguez

Email Brian at brodriguez@wkowtv.com

Follow Brian on Twitter @Brodriguez_wkow

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