FARGO, N.D. (AP) — A North Dakota man accused of helping to kill a pregnant woman tightened a rope around her neck after his girlfriend sliced the baby from the victim's womb, a prosecutor said Wednesday, later suggesting the girlfriend couldn't have restrained the mom-to-be alone.

William Hoehn is charged with conspiracy to commit murder in the death of 22-year-old Savanna Greywind, who was eight months pregnant when she was killed in August 2017.

Brooke Crews, who then lived with Hoehn, pleaded guilty last year in the killing and is serving life in prison without parole . Hoehn has said all...