GREENLAND, N.H. — New Hampshire investigators say one of the guns found inside the Greenland home where Police Chief Michael Maloney was killed was purchased by a woman who also was shot to death that night.

Prosecutors say 29-year-old Cullen Mutrie killed Maloney and shot four other officers during a drug raid April 12. Mutrie then killed his girlfriend — 26-year-old Brittany Tibbetts — before turning the gun on himself.

The attorney general’s office said Wednesday that a .357 caliber revolver found in the home was purchased by Tibbetts on Jan 16 at a Manchester gun show. Police have not yet confirmed the origin of a 9 mm pistol that was also recovered.