Shawna Nelson (left), Michelle Moore (right)
On Jan. 23, 2007, Shawna Nelson donned a black mask, ordered her ex-lover's wife to her knees and shot her twice in the head in the parking lot of a credit union in Greeley. She was convicted of murder and sentenced to life in prison without parole. Nelson, a Weld County sheriff's dispatcher at the time, had a long affair with victim Heather Garraus' husband, Ignacio, who was a Greeley police officer. They had a son together, but Ignacio Garraus broke off the relationship a month before the shooting. Witnesses said the masked killer, dressed in black, confronted Garraus in the parking lot of a Greeley credit union where Garraus worked and told her, "You ruined my life. Get on the ground" before shooting her. ... In April 2008 Michelle Moore was sentenced to 9 years in prison for her role in the murder of Heather Garraus in January 2007. Moore had entered a guilty plea to a charge of being an accessory to murder a month prior. She was accused of helping Shawna Nelson plot the Greeley killing. The April 2008 mug shot pictured shows Moore a few days before her sentencing. She was arrested on a drunk driving charge in Larimer County.