PORTLAND, Ore. (AP) — An Oregon man convicted of manslaughter years after the 2000 death of his 15-year-old girlfriend is expected to walk out of prison after the state decided not to appeal a ruling that overturned the conviction. The Oregonian/OregonLive reports Coos County District Attorney Paul Frasier decided against a new trial for Nicholas McGuffin in the death of Leah Freeman. A judge earlier this month overturned McGuffin’s conviction because the Oregon State Police crime lab failed to disclose that it had found another man’s DNA on the girl’s shoe. Malheur County Circuit Senior Judge Patricia Sullivan concluded the DNA information could have led the jury to acquit McGuffin. Frasier says he thinks authorities convicted the right man.