BRIGHTON, Colo. (AP) — A 24-year-old man who was arrested in Wyoming after police say he confessed to killing his girlfriend in their suburban Denver apartment has been sentenced to 34 years in prison.

Jonathan Akin was sentenced Wednesday after previously pleaded guilty to second-degree murder in the November 2018 stabbing death of 21-year-old Autumn Rivera.

He surrendered to police in Powell, Wyoming two days after the slaying, and officers found Rivera dead in the trunk of his car.

An arrest affidavit says Akin told investigators he killed Rivera in Thornton but did not remember how because he had “blacked out.”

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