A fisherman who died over six years ago was named this week as the prime suspect in three cold-case killings in Virginia — including a pair that was once linked to an infamous slaying spree known as the “Colonial Parkway Murders.”

Alan W. Wilmer Sr. was linked through DNA evidence to the 1987 shooting deaths of David L. Knobling and Robin M. Edwards, as well as the 1989 strangulation of Teresa Lynn Spaw Howell, Virginia State Police announced Monday.