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Man accused of stabbing girlfriend more than a dozen times claims self-defense

Stephen DeRossett was arrested for first-degree murder in connection with the death of Keli Jackson on New Year's Day.

LAKEWOOD, Colo. — The woman who was stabbed to death on New Year's Day suffered more than a dozen stab and cut wounds, according to an arrest affidavit for her boyfriend from the Lakewood Police Department (LPD).

The victim, identified as 49-year-old Keli Jackson, also had swelling and bruising around both of her eyes, the document says.

Her boyfriend, 52-year-old Stephen DeRossett, was arrested and is being held without bond at the Jefferson County Jail on charges of first-degree murder and domestic violence.

LPD said officers were called to the 2500 block of South Cody Way just before 11:30 a.m. on Jan. 1. 

When they arrived, they found Jackson suffering from multiple stab wounds, police said. She was pronounced dead at the scene.

DeRossett was the one who called LPD to the home. He initially said a woman had come at him with a knife but that he was able to take it away and restrain her, the arrest affidavit says.

He identified the woman as Jackson, and said she was "highly intoxicated" and had "started acting weird after taking shots," according to the affidavit.

DeRossett said Jackson, whom he'd been dating for about seven months, "began swinging" at him and he "defended himself."  He said Jackson then grabbed the knife.

Officers noticed a scrape on his knee, scratches on his face and a cut on his right hand near his pinky finger, according to the affidavit.

He said, according to the affidavit, that Jackson hit him "multiple times in the head and face area" and that he was "just defending himself" and that he "did not know what happened next."

When he noticed blood all over Jackson, DeRossett said he called police, the affidavit says. When told that Jackson had died, he stated, "he took someone's life and did not have permission to do that," according to the affidavit.

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