Man fatally stabbed ex-girlfriend's mom, sentenced 26 years to l - CBS News 8 - San Diego, CA News Station - KFMB Channel 8

Man fatally stabbed ex-girlfriend's mom, sentenced 26 years to life

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EL CAJON (CNS) - A man who killed his ex-girlfriend's mother in La Mesa in 1986 was given 26 years to life in prison Tuesday.

"I did not commit this crime," Marc Exter Jernigan told the court.

"Hopefully the truth will come out."

Jernigan, 44, was convicted of first-degree murder in the Aug. 8, 1986, slaying of June George.

Judge Herbert Exarhos handled the sentencing.

Witnesses testified that George disapproved of Jernigan, who was dating her then-18-year-old daughter, Kathie Keller Dalby.

Dalby said she and Jernigan were boyfriend and girlfriend in high school and broke up about two weeks before her mother was killed.

Dalby found her mother's body in the kitchen of her home in the 8800 block of Mariposa Street. The victim had been stabbed 78 times.

At the time, Dalby described Jernigan as "All-American" and "perfect" and said she could not imagine him killing her mother, Deputy District Attorney Jill Schall said.

Jernigan was arrested in February 2006 after La Mesa police reopened the case and tests matched his DNA to blood found on a bathroom towel at the crime scene, according to the prosecutor.

The defendant's blood was also found on a bedspread and a plastic photograph holder from George's wallet, the prosecutor said.

Defense attorney Christopher Plourd told the jury that Jernigan's DNA was found in the victim's home because he was over there having sex with the victim's daughter all the time.

Plourd said there were problems with the evidence, alleging DNA samples were contaminated and mixed up.

THIS IS AN UPDATE TO THE PREVIOUS STORY BELOW.

EL CAJON (CNS) - A man who fatally stabbed his ex-girlfriend's mother in her La Mesa home more than 25 years ago is scheduled to be sentenced Tuesday in an El Cajon courtroom.

Marc Exter Jernigan, 44, was convicted of first-degree murder in the Aug. 8, 1986, slaying of June George. He faces 26 years to life in prison when he is sentenced by Judge Herbert Exarhos.

Witnesses testified that the 47-year-old victim disapproved of the defendant dating her then-18-year-old daughter, Kathie Keller Dalby.

Dalby said she and Jernigan were boyfriend-girlfriend in high school and broke up about two weeks before her mother was killed.

Dalby found her mother's body in the kitchen of her home in the 8800 block of Mariposa Street. The victim had been stabbed 78 times.

At the time, Dalby described Jernigan as "All-American" and "perfect" and said she could not imagine him killing her mother, Deputy

District Attorney Jill Schall said.

Jernigan was arrested in February 2006 after La Mesa police re-opened the case and tests matched his DNA to blood found on a bathroom towel at the crime scene, according to the prosecutor.

The defendant's blood was also found on a bedspread and a plastic photograph holder from George's wallet, the prosecutor said.

Defense attorney Christopher Plourd told the jury that Jernigan's DNA was found in the victim's home because he was over there having sex with the victim's daughter all the time.

Plourd said there were problems with the evidence, alleging DNA samples were contaminated and mixed up.

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