MISSOULA – The 23-year-old woman accused in the August 2017 stabbing death and dismembering a man and a teenage girl has pleaded guilty to two charges.
The Missoulian reports that Tiffanie Pierce reached a plea agreement with prosecutors Thursday in Missoula County District Court on charges of attempted deliberate homicide and accountability to deliberate homicide.
The plea agreement calls for life in prison with no restrictions on parole.
Pierce was charged in the killings of 24-year-old Jackson Wiles and 15-year-old Marilyn Pickett. Police found their bodies dismembered and partially dissolved in tubs of chemicals.
Her co-defendant in the case, 26-year-old Augustus Standingrock pleaded guilty in December. His plea agreement recommends a life sentence in which he is eligible for parole.