Sacramento prosecutors filed another 28 charges on Monday against a UC Berkeley employee suspected to be the NorCal Rapist, who terrorized the region for 15 years.
Roy Charles Waller was arrested on campus in September after DNA evidence from his family lineage matched evidence of at least 11 sexual assaults in Northern California. Prosecutors announced the amended filing in a brief hearing in Sacramento Superior Court, bringing his total charges to 40, the Los Angeles Times reports.
The series of assaults began in 1991, when the suspect entered a Rohnert Park home and raped the 21-year-old female resident. Through 2006, victims in Sacramento, Yolo, Butte, Contra Costa, Solano and Sonoma counties would face similar attacks.
Waller allegedly tormented the women for hours, when they were sometimes bound with duct tape and blindfolded. He forced some victims to withdraw cash from ATM machines and even posed as a trick-or-treater to get inside one of their homes.
DNA evidence led to the additional 28 charges that may be consolidated into one trial in Sacramento.Â
Waller began working at the UC Berkeley’s Environmental Health and Safety Office one year after the attacks began. He is scheduled to return to court on March 8.
