A jury found Gregory Nurrenberg Jr. guilty but mentally ill when he killed 45-year-old Sherry Dickey.

Nurrenberg, 24, admitted killing Dickey during Memorial Day weekend 2006, but pleaded not guilty by reason of insanity.

Jurors deliberated approximately 4 ½ hours before reaching a verdict about 7 p.m. Monday. The trial in Lawrence Superior Court II lasted five days.